Word.ws English Dictionary

Words That Start with HY

There are 442 words that start with HY on Word.ws, from 3 to 15 letters. The most common length is 12 letters (67 words). The words used most often are hybrid, hype, hydrogen, hypothesis and hygiene.

Meanings from Wiktionary. Not an official Scrabble, Words With Friends or Wordle word list.

3-letter words that start with HY

  • hyl9n. A unit of mass that is accelerated at a rate of 1 meter per second...
  • hyp11n. Hypochondria.

4-letter words that start with HY

  • hyah13interj. A call, often to horses, livestock, or cattle, to move forward or...
  • hyla10n. A tree frog of the genus Hyla.
  • hyle10n. Synonym of protomatter, the first matter of the cosmos from which the...
  • hymn12n. A song of praise or worship, especially a religious one.
  • hype12n. Promotion or propaganda, especially exaggerated claims.
  • hypo12n. A hypochondriac.

5-letter words that start with HY

  • hydel12adj. Hydroelectric.
  • hydra12n. A dragon-like creature with many heads and the ability to regrow them...
  • hydro12n. Electrical power supply; specifically, electrical power provided by a...
  • hyena11n. Any of the medium-sized to large feliform carnivores of the family...
  • hygge13n. A feeling of cosiness, comfort, contentment and conviviality.
  • hylia11n. Any bird in the family Hyliidae.
  • hymen13n. A membrane which completely or partially occludes the vaginal opening...
  • hyoid12adj. Shaped like a U, or like the letter upsilon (υ).
  • hyped14adj. Having been subject to propaganda and promotion; promoted beyond what...
  • hyper13n. A character or an individual with large body parts, usually the...
  • hypha16n. Any of the long, threadlike filaments that form the mycelium of a...
  • hyphy19adj. Rambunctious, loud, crazy, dangerous, irrational, and outrageous in...
  • hyrax18n. Any of several small, paenungulate herbivorous mammals of the family...
  • hyson11n. A Chinese green tea.
  • hythe14n. A landing-place in a river; a harbour or small port.
  • hyung12n. An affectionate term of address for an older brother or somewhat older...

6-letter words that start with HY

  • hyaena12n. Dated spelling of hyena.
  • hybrid15n. Offspring resulting from cross-breeding different entities, e.g. two...
  • hydria13n. A three-handled clay or metal vessel used in Greek culture to hold and...
  • hydric15adj. Characterized by, or requiring, moisture.
  • hydron13n. Any hydrogen cation, e.g. a proton (¹H⁺).
  • hydros13n. Transliteration of Greek ὕδρος, "water snake".
  • hydrox20n. A breathing gas composed of hydrogen and oxygen used for its lighter...
  • hymnal14n. A collection of hymns; a hymn book.
  • hymned15adj. For whom a hymn is sung (typically at a funeral).
  • hyphal17adj. Of or pertaining to hyphae.
  • hyphen17n. The symbol "‐", typically used to join two or more words to form a...
  • hypnic16adj. That induces sleep.
  • hypoid15adj. Describing gear wheels whose axes are offset from each other.
  • hyssop14n. Any of several aromatic bushy herbs, of the genus Hyssopus, native to...

7-letter words that start with HY

  • hyaline13adj. Glassy, transparent; amorphous.
  • hyaloid14adj. Transparent or glassy.
  • hydatid15n. A cyst due to infection by larvae of some species of the tapeworm...
  • hydrant14n. An outlet from a liquid/fluid main often consisting of an upright pipe...
  • hydrate14n. A solid compound containing or linked to water molecules.
  • hydride15n. A compound of hydrogen with a more electropositive element.
  • hydroid15n. Any of many colonial coelenterates that exist mainly as a polyp; a...
  • hydrops16n. The abnormal accumulation of serous fluid in a tissue or cavity.
  • hydrous14adj. Containing combined water; hydrated.
  • hydroxy24adj. Being, or containing a hydroxyl radical.
  • hygiene14n. The science of health, its promotion and preservation.
  • hymnody19n. The writing, composing, or singing of hymns or psalms.
  • hyphema20n. The presence of blood in the anterior chamber of the eye.
  • hypoxia22n. A condition in which tissues are deprived of an adequate supply of...
  • hypoxic24adj. Of, pertaining to, or suffering from hypoxia.
  • hystrix20n. Ichthyosis hystrix.

8-letter words that start with HY

  • hyacinth19n. Any bulbous plant of the genus Hyacinthus, native to the Mediterranean...
  • hydrated16adj. Combined chemically with water.
  • hydrator15n. Something that hydrates.
  • hydrilla15n. An aquatic plant, Hydrilla verticillata.
  • hydrogel16n. A colloid gel in which water is the continuous phase; they have a...
  • hydrogen16n. The lightest chemical element (symbol H), with an atomic number of 1...
  • hydronic17adj. Being or relating to a heating system that involves circulating hot...
  • hydrosol15n. A sol (solid-in-liquid colloid) in which the continuous phase...
  • hydroxyl25n. A univalent radical or functional group (–OH) in organic chemistry...
  • hygienic17adj. Pertaining to hygiene; clean, sanitary, free of disease.
  • hymeneal16adj. Pertaining to marriage.
  • hymenium18n. The sporebearing surface of a fungus.
  • hymnbook22n. A book containing a collection of hymns.
  • hyoscine16n. An oily alakoid liquid, formerly used as a sedative; scopolamine.
  • hypercar18n. A supercar with such extreme performance and expense as to have...
  • hypnosis16n. A trancelike state, artificially induced, in which a person has a...
  • hypnotic18adj. Of or relating to hypnosis or hypnotism.
  • hypogeum19n. An underground room or cavern (also used figuratively).
  • hypopnea18n. A disorder which involves episodes of overly shallow breathing or an...
  • hypothec21n. In Scotland, a landlord's right over the stocking (cattle, implements...
  • hysteria14n. Behavior exhibiting excessive or uncontrollable emotions, in a wide...
  • hysteric16adj. Hysterical; relating to hysteria.

9-letter words that start with HY

  • hybridity21n. Synonym of hybridism.
  • hybridize27v. To form a mixture of any kind.
  • hybridoma20n. A hybrid cell engineered from a lymphocyte and a tumour cell; used to...
  • hydrangea17n. Any of several shrubs, of the genus Hydrangea, having large clusters of...
  • hydration16n. The incorporation of water molecules into a complex with those of...
  • hydraulic18adj. Pertaining to water.
  • hydrazine25n. A corrosive, fuming liquid, NH₂-NH₂, used as a rocket fuel.
  • hydrazone25n. Any compound, of general formula R₂C=NNR₂, formally derived from an...
  • hydrocele18n. An abnormal build-up of fluids at a site in the body, especially in the...
  • hydrofoil19n. A wing attached to the hull of a ship that raises it out of the water...
  • hydrolase16n. An enzyme that catalyzes the hydrolysis of a substrate.
  • hydrology20n. The science of the properties, distribution, and effects of water on a...
  • hydrolyze28v. To subject to hydrolysis.
  • hydronium18n. The hydrated hydrogen ion, H₃O⁺.
  • hydroxide24n. A univalent anion (OH⁻) based on the hydroxyl functional group.
  • hygienist16n. A person skilled in hygienics, but especially a dental assistant who...
  • hymnology21n. The study of hymns; hymnody.
  • hypebeast19n. A person obsessed with acquiring fashionable items, especially clothing...
  • hyperbola19n. A conic section formed by the intersection of a cone with a plane that...
  • hyperbole19n. Deliberate overstatement, particularly extreme overstatement.
  • hypercard20n. A shape, used in magic tricks, made by cutting and folding a playing...
  • hypercube21n. A geometric figure in four or more dimensions, which is analogous to a...
  • hyperemia19n. Excess of blood in a body part.
  • hyperfine20adj. Extremely fine, especially of the hyperfine structure in the spectra of...
  • hypergamy23n. Act or practice of seeking a spouse of higher socioeconomic status or...
  • hypericum21n. Any of many flowering plants of the genus Hypericum, St. John's worts.
  • hyperlink21n. The URL or other address that defines a hyperlink's target or function.
  • hyperloop19n. A theoretical high-speed transportation system, proposed by Elon Musk...
  • hyperopia19n. A disorder of the vision where the eye focuses images behind the retina...
  • hyperreal17adj. Of or pertaining to philosophical hyperreality; perceivable as real by...
  • hypertext24n. Digital text in which the reader may navigate related information...
  • hyphenate20v. To break a word at the end of a line according to the hyphenation rules...
  • hypnotise17v. To induce a state of hypnosis in.
  • hypnotism19n. The art of inducing hypnosis.
  • hypnotist17n. A person who uses hypnotism to induce hypnosis in someone, either for...
  • hypnotize26v. To induce a state of hypnosis in.
  • hypobaric21adj. Of, relating to, or using less than normal air pressure.
  • hypocaust19n. An underfloor space or flue through which heat from a furnace passes to...
  • hypocotyl22n. In plants with seeds, that portion of the embryo or seedling between...
  • hypocrisy22n. The contrivance of a false appearance of virtue or goodness, while...
  • hypocrite19n. Someone who practices hypocrisy, who pretends to hold beliefs, or whose...
  • hypomania19n. A mild form of mania, especially the phase of several mood disorders...
  • hypomanic21adj. Afflicted with a mild state of mania.
  • hypostyle20adj. Having a roof supported on a row of columns.
  • hypotonia17n. A state of reduced pressure of the intraocular fluid.
  • hypotonic19adj. Having a lower osmotic pressure than another.
  • hypoxemia26n. An abnormal deficiency in the concentration of oxygen in the blood...
  • hysterics17n. Synonym of hysteria.

The 48 most common of 60 are shown.

10-letter words that start with HY

  • hyaluronan16n. The polysaccharide hyaluronic acid.
  • hyaluronic18adj. Of or pertaining to hyaluronic acid or its derivatives.
  • hydraulics19n. The engineering science that deals with practical applications where...
  • hydroflask24n. A device for carrying out polymerization under pressure.
  • hydrograph23n. A graph of flow past a point in a river versus time.
  • hydrologic20adj. Of or pertaining to hydrology.
  • hydrolysis20n. A chemical process of decomposition involving the splitting of a bond...
  • hydrolytic22adj. Of, pertaining to, or accompanied by hydrolysis.
  • hydrometer19n. An instrument that floats in a liquid and measures its specific gravity...
  • hydropathy25n. The therapeutic use of water, either internally or externally.
  • hydrophone22n. A transducer that converts underwater sound waves into electrical...
  • hydroplane19v. To skim the surface of a body of water while moving at high speed.
  • hydroponic21adj. Of a plant; pertaining to or grown using hydroponics, a method of...
  • hydropower22n. Hydroelectric power.
  • hygrometer19n. An instrument that measures the humidity of the air or other gases...
  • hypanthium23n. The bowl-shaped part of a flower on which the sepals, petals, and...
  • hyperacute20adj. Very acute.
  • hyperaware21adj. Extremely aware; much more alert to stimuli than normal.
  • hyperbaric22adj. Of, relating to, or using greater than normal pressure (as of oxygen).
  • hyperbolic22adj. Of or relating to hyperbole.
  • hyperdrive22n. A spaceship engine that allows faster-than-light travel by entering...
  • hyperfocus23n. An intense form of mental concentration or visualization that focuses...
  • hypergolic21adj. Igniting spontaneously upon contact with an oxidizer.
  • hypergraph24n. A generalization of a graph, in which edges can connect any number of...
  • hyperlapse20n. A form of time-lapse photography where the camera is gradually moved...
  • hypermedia21n. The use of text, data, graphics, audio and video as elements of an...
  • hyperplane20n. An n-dimensional generalization of a plane; an affine subspace of...
  • hypersonic20adj. Of a speed, equal to, or greater than, or capable of achieving, five...
  • hyperspace22n. An n-dimensional Euclidian space with n > 3.
  • hyperspeed21n. Extremely high speed.
  • hypertonia18n. An abnormal increase in tightness of muscle tone, common in cerebral...
  • hypertonic20adj. Having a greater osmotic pressure than another.
  • hypervisor21n. A firmware or software system that provides a virtual machine and...
  • hyphenated22adj. Written with a hyphen.
  • hypnagogic22adj. That induces sleep; soporific, somniferous.
  • hypnotized28adj. Under hypnosis.
  • hypoactive23adj. Less than normally active.
  • hypocretin20n. Synonym of orexin.
  • hypodermic23adj. Of, or relating to the hypodermis, the layer beneath the dermis.
  • hypophysis26n. The pituitary gland.
  • hypoplasia20n. Underdevelopment or incomplete development of a tissue or organ...
  • hypostasis18n. The essential person, specifically the single person of Christ (as...
  • hypostatic20adj. Pertaining to hypostasis, especially with reference to hypostatic union.
  • hypotenuse18n. The side of a right triangle opposite the right angle.
  • hypothesis21n. A tentative conjecture explaining an observation, phenomenon or...
  • hysteresis16n. A property of a system such that an output value is not a strict...
  • hysteretic18adj. Of or pertaining to hysteresis.
  • hysterical18adj. Of, or arising from hysteria.

The 48 most common of 61 are shown.

11-letter words that start with HY

  • hyaluronate17n. Any salt or ester of hyaluronic acid.
  • hydralazine27n. A direct-acting smooth muscle relaxant used to treat hypertension by...
  • hydrocarbon22n. A compound consisting only of carbon and hydrogen atoms.
  • hydrocodone21n. A habit-forming compound that is derived from codeine and is...
  • hydrocyanic25adj. Of or pertaining to hydrocyanic acid or its compounds.
  • hydrogenase19n. Any enzyme that catalyzes the reduction of a substrate by the...
  • hydrography27n. The scientific measurement and description of the physical features and...
  • hydrologist19n. Someone who is skilled in or practises hydrology.
  • hydrolysate21n. Any product of a hydrolysis reaction.
  • hydropathic25adj. Relating to or offering hydropathy.
  • hydrophilic25adj. Having an affinity for water; able to absorb, or be wetted by water...
  • hydrophobia25n. An aversion to water, as a symptom of rabies; the disease of rabies...
  • hydrophobic27adj. Of, or having, hydrophobia (rabies); rabid.
  • hydroponics22n. The cultivation of plants in a nutrient solution rather than in the...
  • hydrosphere23n. All the liquid waters of the Earth or another astronomical body, as...
  • hydrostatic20adj. Of or relating to hydrostatics.
  • hydroxylase28n. Any of several enzymes that catalyze the oxidation of compounds by the...
  • hydroxyurea28n. The hydroxylated derivative of urea, NH₂CO-NHOH, used as an...
  • hydroxyzine37n. A first-generation antihistamine of the piperazine class, used as an...
  • hygroscopic24adj. Readily taking up and retaining water, especially from the atmosphere.
  • hyoscyamine24n. A poisonous alkaloid present in henbane that is the stereoisomer of...
  • hyperactive24adj. Having an increased state of activity.
  • hyperacusis21n. A heightened sensitivity to some sounds, especially extremely loud...
  • hyperboloid22n. A particular surface in three-dimensional Euclidean space, the graph of...
  • hyperborean21n. One of a race of people living in the extreme north, beyond the north...
  • hypercapnia23n. The condition of abnormally elevated carbon dioxide in the blood.
  • hyperemesis21n. Severe and excessive vomiting.
  • hyperledger21n. A distributed ledger of blockchains.
  • hypermarket25n. A shop combining elements of a department store and a supermarket.
  • hyperplasia21n. An increase in the size of a tissue or organ due to increased number of...
  • hypersaline19adj. Having an abnormally high salinity.
  • hypersexual26adj. Excessively interested in sex.
  • hypersomnia21n. Excessive sleepiness.
  • hypertrophy27n. An increase in the size of an organ or tissue due to the enlargement of...
  • hyphenation22n. The inclusion of hyphens; especially, the correct locations of hyphens.
  • hypnotising20adj. Hypnotic.
  • hypoglossal20adj. Of or pertaining to the area under the tongue.
  • hypokalemia25n. The condition of having an abnormally low concentration of potassium...
  • hypoplastic23adj. Of, or pertaining to hypoplasia or hypoplasty.
  • hypospadias22n. A congenital condition in males in which the opening of the urethra is...
  • hypotension19n. The disease or disorder of abnormally low blood pressure.
  • hypotensive22adj. Having hypotension.
  • hypothermia24n. Abnormally low body temperature; specifically, below 35 degrees Celsius...
  • hypothermic26adj. Affected by hypothermia; having an abnormally low body temperature.
  • hypothesize31v. To assume or assert tentatively on uncertain grounds.
  • hypothyroid26adj. Of or pertaining to hypothyroidism.
  • hypovolemia24n. A state of decreased blood plasma volume.
  • hypovolemic26adj. Of, pertaining to hypovolemia, or characterized by low volume of blood...

The 48 most common of 65 are shown.

12-letter words that start with HY

  • hydrobiology25n. The study of the biology of the organisms that inhabit bodies of water.
  • hydrochloric26adj. Of or relating to hydrochloric acid.
  • hydrocolloid22n. Any material that forms a colloid (especially a gel) when mixed with...
  • hydrodynamic27adj. Of, or relating to the science of hydrodynamics.
  • hydrofluoric24adj. Containing hydrogen and fluorine.
  • hydrogenated21adj. That has been treated, or reacted with hydrogen; especially describing...
  • hydrogeology24n. The geology of groundwater, especially concerning the physical...
  • hydrographer25n. A scientist whose speciality is hydrography.
  • hydrographic27adj. Of or pertaining to hydrography.
  • hydrological22adj. Of or pertaining to hydrology.
  • hydroplaning22n. The loss of contact with the road because of surface water; the act of...
  • hydroquinone28n. The diphenol para-dihydroxy benzene, used as a mild reducing agent in...
  • hydrostatics21n. The scientific study of fluids at rest, especially when under pressure.
  • hydrotherapy27n. Any of various techniques that use water, either externally or...
  • hydrothermal24adj. Of, or relating to hot water.
  • hydroxyethyl35n. The univalent radical HO-CH₂-CH₂- derived from ethylene glycol.
  • hydroxylated30adj. That has been modified by hydroxylation.
  • hygienically24adv. In a hygienic manner.
  • hyperalgesia21n. An increased sensitivity to pain, which in one form is caused by damage...
  • hyperkalemia26n. The condition of having an abnormally high concentration of potassium...
  • hyperkinetic26adj. Of, relating to, or affected with hyperkinesis or hyperactivity.
  • hyperplastic24adj. Of, or relating to hyperplasia.
  • hyperreality23n. The state or condition of being hyperreal.
  • hypersurface25n. A n-dimensional surface in a space (often a Euclidean space) of...
  • hypertension20n. A state of abnormally high blood pressure of arterial blood (arterial...
  • hypertensive23adj. Of, pertaining to, or causing hypertension.
  • hyperthermia25n. The condition of having an abnormally high body temperature caused by a...
  • hyperthermic27adj. Having a very high temperature.
  • hyperthyroid27adj. Of or pertaining to hyperthyroidism.
  • hypertrophic27adj. Of, pertaining to, or exhibiting hypertrophy.
  • hypnotherapy28n. Treatment of disease by means of hypnotism.
  • hypnotically25adv. In a hypnotic manner.
  • hypocalcemia26n. The medical sign of having an abnormally low concentration of calcium...
  • hypochlorite25n. Any salt of hypochlorous acid; used as a household bleach.
  • hypochlorous25adj. Pertaining to or derived from chlorine having a valence lower than in...
  • hypochondria26n. A formerly defined psychological disorder characterized by excessive...
  • hypocritical24adj. Characterized by hypocrisy or being a hypocrite.
  • hypoglycemia28n. A too low level of blood glucose.
  • hypoglycemic30adj. Suffering from hypoglycemia.
  • hypogonadism24n. A sexual reproductive system impairment characteristic of gonadal...
  • hyponatremia22n. An abnormally low concentration of sodium in blood plasma.
  • hypothalamic27adj. Of or pertaining to the hypothalamus.
  • hypothalamus25n. A region of the forebrain located below the thalamus, forming the basal...
  • hypothetical25adj. Based upon a hypothesis; conjectural.
  • hypoxanthine30n. A bicyclic heterocycle, 3,7-dihydropurin-6-one, that is an intermediate...
  • hysterectomy25n. The surgical procedure to remove all of or part of the uterus.
  • hysterically23adv. In a hysterical manner; showing signs of hysteria.
  • hysteroscopy25n. A medical procedure where a doctor uses a thin, lighted camera inserted...

The 48 most common of 67 are shown.

13-letter words that start with HY

  • hyaluronidase20n. Any enzyme that catalyses the hydrolysis of hyaluronic acid.
  • hybridization31n. The linear combination of atomic orbitals in a molecule to form hybrid...
  • hydraulically25adv. Using hydraulics.
  • hydroacoustic24adj. Of or pertaining to hydroacoustics.
  • hydroboration22n. The production or organoboranes by the addition of diborane to...
  • hydrocephalus27n. A usually congenital condition in which an abnormal accumulation of...
  • hydrochloride26n. A compound of hydrochloric acid with an organic base such as an amine.
  • hydrocracking29n. The production of high-octane petroleum fuel and kerosene by...
  • hydrodynamics28n. The scientific study of liquids in motion.
  • hydroelectric24adj. That generates electricity by converting the energy of moving water, or...
  • hydrofracking30n. Hydraulic fracturing.
  • hydrogenation21n. The chemical reaction of hydrogen with another substance, especially...
  • hydrogeologic24adj. Of or pertaining to hydrogeology.
  • hydromorphone27n. A synthetic narcotic analgesic, (4,5 alpha-epoxy-3-hydroxy-17-methyl...
  • hydroperoxide30n. Any mono-substituted derivative of hydrogen peroxide - ROOH.
  • hydroxylamine32n. An explosive inorganic derivative of ammonia, NH₂OH, used as a reducing...
  • hydroxylation30n. The introduction of a hydroxyl group into a molecule, especially by the...
  • hydroxymethyl38n. The univalent radical HO-CH₂-.
  • hydroxyphenyl38n. Any of three isomeric hydroxy derivatives of the phenyl radical.
  • hydroxypropyl37n. Any of three isomeric univalent radicals in which a hydrogen atom of a...
  • hyperactivity29n. The quality of being hyperactive; excessive and pathological movement...
  • hyperallergic24adj. Very allergic.
  • hypercalcemia27n. The presence of an unusually high concentration of calcium in the blood.
  • hypercritical25adj. Meticulously or excessively critical.
  • hyperelliptic25adj. Describing an extension of elliptic functions to complex numbers.
  • hyperesthesia24n. Unusual or pathological sensitivity of the skin or of a particular...
  • hyperextended30adj. Extremely long; extended greatly.
  • hyperglycemia29n. An unusually high concentration of sugar in the blood.
  • hyperglycemic31adj. Having (or producing) excessively high blood sugar.
  • hyperhidrosis25n. A medical condition with the primary symptom of excessive sweating, in...
  • hypermobility28n. An excess amount of elasticity in a bodily joint.
  • hypermutation23n. Frequent mutation.
  • hypernatremia23n. An abnormally high concentration of sodium in blood plasma.
  • hyperoxaluria28n. The presence of an excessive amount of oxalic acid or oxalates in the...
  • hyperpartisan23adj. Extremely partisan; extremely biased in favor of a political party.
  • hyperreflexia31n. Overactive or overresponsive reflexes.
  • hyperspectral25adj. Describing any technique that employs a large part of the...
  • hypertelorism23n. An abnormally increased distance between two organs or body parts...
  • hyperuricemia25n. An abnormally high level of uric acid in one's blood.
  • hypervariable26adj. Having a high degree of variability.
  • hypervelocity29adj. Having, or occurring at, extreme velocity.
  • hypervigilant25adj. In a state of hypervigilance.
  • hypnobirthing27n. The use of hypnotherapy to ease the process of childbirth.
  • hypochondriac29adj. Related to, or affected by hypochondria.
  • hypolipidemic28adj. That reduces the concentration of lipid in blood serum.
  • hypoperfusion26n. Decreased perfusion, especially of blood through an organ.
  • hypothecation26n. The use of property, or an existing mortgage, as security for a loan...

14-letter words that start with HY

  • hydrocortisone23n. Name used for cortisol, a glucocorticoid steroid hormone, when used as...
  • hydrodynamical29adj. Hydrodynamic.
  • hydrogenolysis25n. The cleavage of a molecule, especially that of a carbon-carbon bond...
  • hydrogeologist23n. A person involved in hydrogeology.
  • hydrographical29adj. Hydrographic.
  • hydrologically27adv. With regard to hydrology.
  • hydronephrosis26n. Distension of the kidneys due to obstruction in the flow of urine.
  • hydrophilicity31n. The condition of being hydrophilic.
  • hydrophobicity33n. The condition of being hydrophobic.
  • hydropneumatic27adj. Operated by both fluid and air power.
  • hydroponically28adv. Using hydroponics.
  • hydrothermally29adv. By hydrothermal means.
  • hydroxyapatite33n. A basic calcium phosphate mineral that is the principal inorganic...
  • hydroxybenzoic44adj. Of or pertaining to hydroxybenzoic acid or its derivatives.
  • hydroxybutyric38adj. Of or pertaining to the hydroxybutyric acids or their derivatives.
  • hydroxyproline33n. A hydroxy derivative of the amino acid proline found in the structural...
  • hydroxysteroid32n. Any alcohol derivative of a steroid.
  • hydroxyvitamin36n. Any hydroxy derivative of a vitamin, but in practice a derivative of...
  • hyperammonemia28n. A metabolic disturbance characterized by excessive ammonia in the blood.
  • hyperbolically29adv. In a hyperbolic manner.
  • hyperconnected27adj. That is not the union of two proper closed sets; such that every open...
  • hyperconverged29adj. Implemented within a hypervisor.
  • hyperextension29n. The extension of a joint beyond its normal range; the condition of...
  • hypergeometric27adj. Pertaining to mathematical entities of different kinds (series...
  • hyperinflation25n. Excessive inflation.
  • hyperintensity25n. An area of high intensity (for example, as seen in magnetic resonance...
  • hyperkeratosis26n. Excess keratin formation on the skin surface, as can be seen in a...
  • hyperkeratotic28adj. Of, pertaining to, or suffering from hyperkeratosis.
  • hyperlipidemia27n. An excess quantity of lipid in the blood; a symptom of several medical...
  • hypermasculine26adj. Extremely masculine.
  • hyperparameter26n. A parameter of a prior (as distinguished from inferred parameters of...
  • hyperpigmented28adj. Pigmented more than normal; pigmented too much.
  • hyperrealistic24adj. Very realistic.
  • hypersecretion24n. Excessive secretion.
  • hypersensitive25adj. Highly or abnormally sensitive to some substances or agents, especially...
  • hypersexuality32n. Excessive desire for sexual activity, especially when considered high...
  • hyperthreading27n. A form of microprocessor parallelization where each physical processor...
  • hypertrichosis27n. A medical condition of excessive body hair, either affecting most of...
  • hyperventilate25v. To breathe quickly and deeply, especially at an abnormally rapid rate.
  • hypervigilance28n. An enhanced state of sensory sensitivity accompanied by an exaggerated...
  • hypnotherapist27n. A practitioner of hypnotherapy.
  • hypoallergenic25adj. Containing fewer allergens; minimally allergenic.
  • hypocritically29adv. In a hypocritical manner.
  • hypodermically30adv. By hypodermic means.
  • hypomagnesemia27n. The condition of having an abnormally low concentration of magnesium...
  • hypopharyngeal31adj. Relating to the hypopharynx.
  • hypothetically30adv. In a hypothetical way; as a hypothesis.
  • hypothyroidism31n. The disease state caused by insufficient production of thyroid hormone...

15-letter words that start with HY

3,486 rare words that start with HY

The first 300 are shown.

Questions about these words

How many words that start with HY are there?
Word.ws lists 442 words that start with HY, plus 3,486 rare ones.
What are common words that start with HY?
hybrid, hype, hydrogen, hypothesis, hygiene, hydraulic, hyper and hypocrisy.
Which of the words that start with HY has the highest letter score?
hydroxybenzoic scores 44 points with the standard letter tile values.

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Word lists and meanings adapted from the Wiktionary entry of each word. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out names, abbreviations, misspellings and offensive words, and ordered the most common words by how often they appear in English (wordfreq). Meanings from Wiktionary; this is not an official Scrabble, Words With Friends or Wordle word list. Wiktionary data of 2026-09-02.

Cite this page: “Words That Start with HY: 442 Words by Length.” Word.ws, https://word.ws/words/starting-with-hy. Based on Wiktionary, CC BY-SA 4.0.