12-Letter Words Starting with H
There are 180 twelve-letter words that start with H on Word.ws, from haberdashery to hysteroscopy. The most common are headquarters, historically, humanitarian, highlighting and hypothetical.
Meanings from Wiktionary. Not an official Scrabble, Words With Friends or Wordle word list.
All 180 twelve-letter words that start with H
HA
- haberdashery24n. Ribbons, buttons, thread, needles and similar sewing goods sold in a...
- habilitation17n. Equipment; qualification.
- habitability22n. The property of being habitable.
- habitational17adj. Pertaining to habitation or an inhabited region.
- haemophiliac24n. A person with haemophilia.
- haemorrhoids21n. A pathological condition caused by painful masses of dilated veins in...
- hagiographer22n. Someone who writes the biography of a saint.
- hagiographic24adj. Of or pertaining to hagiography.
- hairdressing17n. The washing, colouring, cutting and styling of the hair; the art or...
- hairlessness15n. The condition or quality of being hairless.
- hallucinogen18n. Any substance tending to induce hallucination.
- halogenation16n. The reaction of a halogen with something, especially the replacement of...
- hamstringing19n. An instance of someone or something being hamstringed.
- handicapping23n. The imposition of a handicap.
- handkerchief28n. A piece of cloth, usually square and often fine and elegant, carried...
- handsomeness18n. The quality of being handsome.
- happenstance21n. The chance or random quality of an event or circumstance.
- harbormaster19n. An official responsible for the enforcement of regulations in a port.
- harbourfront20n. The area that fronts on a harbor.
- hardscrabble22adj. Requiring much work to farm, and ultimately not very productive.
- harlequinade25n. A pantomime-like comedy featuring the harlequin or clown.
- harmlessness17n. The characteristic of being harmless.
- harmonically22adv. In a harmonic manner.
- harmoniously20adv. In a harmonious manner; coordinately.
HE
- headmistress18n. A female headteacher.
- headquarters25n. The military installation from which troops are commanded and orders...
- headscissors18n. A hold in which a wrestler wraps his or her legs around either side of...
- heartbreaker21n. A person, usually attractive, who flirts with or otherwise enamours...
- heartrending17adj. That causes great grief, anguish or distress.
- heartstrings16n. The tendons or other structures resembling cords once thought to be...
- heedlessness16n. The state or character of being heedless.
- helicobacter21n. Any member of the Helicobacter bacteria.
- heliocentric19adj. Having the sun at the center/centre; usually in reference to a...
- heliographic23adj. Of or pertaining to heliography; transmitted by heliograph.
- heliophysics25n. The physics of the Sun and its interactions with objects within the...
- heliospheric22adj. Of or pertaining to the heliosphere.
- helplessness17n. The state of being helpless.
- hematogenous18adj. Producing blood.
- hematologist18n. A scientist, usually a medical doctor, who specializes in hematology.
- hemerocallis19n. Any member of the genus Hemerocallis of daylilies.
- hemodialysis21n. Dialysis that uses an extracorporeal apparatus to remove waste products...
- hemodilution18n. An increase in the fluid content of blood (and thus a diminution of the...
- hemodynamics25n. The circulation and movement of blood in the body, and the forces...
- hemorrhaging22n. Bleeding.
- hemorrhoidal21adj. Of or relating to hemorrhoids.
- henceforward24adv. From now on; from this time on.
- hepatologist18n. A person who works in hepatology.
- hepatomegaly23n. An abnormal enlargement of the liver.
- heraldically21adv. In a heraldic manner; according to heraldry.
- hereditarily19adv. In a hereditary manner.
- hereinbefore20adv. Synonym of hereinabove (“above, in this document”).
- heritability20n. The condition of being inheritable.
- hermeneutics19n. The study of interpretation, particularly concerning texts, meaning...
- hermetically22adv. With a hermetic seal; so as to be airtight.
- herpetofauna20n. Reptiles and amphibians as a group, especially those of a particular...
- hesitatingly19adv. In a hesitating manner.
- heterocyclic24adj. Having atoms of two or more different elements in at least one of its...
- heterogenous16adj. Derived from a different individual or species.
- heterologous16adj. Having different relationships or different elements.
- heteronomous17adj. Arising from an external influence, force, or agency; not autonomous.
- heterophobia22n. The fear or resentment of what is different.
- heterophobic24adj. Relating to, or exhibiting, heterophobia.
- heterosexism24n. The assumption made when relating to others that everyone is...
- heterosexist22n. A homophobic heterosexual person.
- heterosexual22adj. Sexually attracted to members of the opposite sex.
- heterozygote28n. A diploid individual that has different alleles at one or more genetic...
- heterozygous28adj. Of an organism: having two different alleles in a given gene.
- hexafluoride26n. Any fluoride containing six fluorine atoms in each molecule.
HI
- hidradenitis17n. Inflammation of the sweat glands.
- hierarchical22adj. Pertaining to a hierarchy (a ranking).
- hieroglyphic26n. A writing system of ancient Egypt, Minoans, Maya and other...
- highlighting24n. The visual emphasis of text by means of a highlight.
- hippopotamus23n. A semi-aquatic, herbivorous, African hoofed mammal of the family...
- histiocytoma22n. A tumour consisting of histiocytes.
- histogenesis16n. The formation and development of the tissues of an organism from...
- histological18adj. Pertaining to histology.
- historically20adv. In a historic manner; with reference to history or the historical...
HO
- holidaymaker25n. Someone who is on holiday.
- holistically20adv. In a holistic manner.
- homebuilding21n. The part of the construction industry concerned with building...
- homelessness17n. The state of being homeless.
- homeomorphic26adj. Having a homeomorphism.
- homeothermic24adj. Related to or being a homeotherm, an animal capable of maintaining a...
- homeschooler22n. One who homeschools a student (typically the parent).
- homesickness23n. The characteristic of being homesick; a strong, sad feeling of missing...
- homesteading19n. The act of appropriation of an unowned, scarce means, thereby gaining...
- homocysteine22n. An amino acid which is monitored in the blood to estimate risk of...
- homogenously21adv. In a homogenous manner, or in a way that ensures homogeneity.
- homologation18n. Any reaction that converts a compound into the next member of a...
- homomorphism26n. A structure-preserving map between two algebraic structures of the same...
- homosexually27adv. In a homosexual way.
- homozygosity33n. The condition of being homozygous.
- honeymooning21n. A honeymoon.
- hopelessness17n. The state of having no hope, being unhopeful.
- horizontally27adv. In a horizontal direction or position.
- horrendously19adv. In a horrendous manner.
- horribleness17n. The property of being horrible.
- horrifically23adv. In a horrific manner.
- horrifyingly25adv. In a horrifying manner.
- horsemanship22n. The skill of horseriding, and sometimes of training and managing horses.
- horticulture17n. The art or science of cultivating gardens; gardening.
- hospitalised18adj. Being treated in a hospital.
- hospitalized27adj. Lying in a hospital, having been hospitalized.
- housebreaker21n. A criminal who breaks into and enters another's house or premises with...
- housebuilder18n. One who builds houses, particularly one who does so professionally.
- housecleaner17n. Someone who cleans a house; especially, someone employed to do it.
- househusband21n. A man who tends to his home as a housekeeper or homemaker; the male...
- housekeeping22n. The chores of maintaining a house as a residence, especially cleaning.
- housepainter17n. A professional painter of houses.
- housewarming21n. A party to celebrate moving into a new home.
HU
- humanitarian17adj. Relating to people's welfare.
- humanization26n. The act of humanizing.
- humification22n. The process of humifying; conversion into humus.
HY
- hydatidiform25adj. Resembling a hydatid.
- hydrobiology25n. The study of the biology of the organisms that inhabit bodies of water.
- hydrobromide24n. A compound of hydrobromic acid with an organic base (distinguished from...
- hydrochloric26adj. Of or relating to hydrochloric acid.
- hydrocolloid22n. Any material that forms a colloid (especially a gel) when mixed with...
- hydrocyclone26n. A cyclone separator used to remove particles from a liquid.
- hydrodynamic27adj. Of, or relating to the science of hydrodynamics.
- hydrofluoric24adj. Containing hydrogen and fluorine.
- hydroforming25n. A cost-effective way of shaping malleable metals into lightweight...
- 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.
- hydrokinetic25adj. Of or pertaining to hydrokinetics.
- hydrological22adj. Of or pertaining to hydrology.
- hydrolyzable33adj. Able to be hydrolyzed.
- 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.
- hydrosulfide23n. Any compound formally derived from hydrogen sulfide by replacing one...
- hydrotalcite21n. A trigonal-hexagonal scalenohedral mineral containing aluminum, carbon...
- 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.
- hyperacidity26n. The condition of being excessively acidic.
- hyperalgesia21n. An increased sensitivity to pain, which in one form is caused by damage...
- hyperarousal20n. A state of heightened psychological and physiological tension resulting...
- hypercomplex33adj. Describing any of several types of higher-dimensional numbers having...
- hyperelastic22adj. Describing an ideally elastic material for which the stress-strain...
- hypergravity27n. The presence of an apparently increased gravitational field in an...
- hyperintense20adj. More than usually intense.
- hyperkalemia26n. The condition of having an abnormally high concentration of potassium...
- hyperkinetic26adj. Of, relating to, or affected with hyperkinesis or hyperactivity.
- hyperosmolar22adj. Of, pertaining to, or as a result of hyperosmolarity.
- hyperosmotic24adj. Hypertonic.
- hyperostosis20n. An excessive growth or thickening of bone.
- hyperplastic24adj. Of, or relating to hyperplasia.
- hyperrealism22n. A style in art that attempts to reproduce highly realistic graphic...
- hyperrealist20n. An artist of the school of hyperrealism.
- 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...
1,512 rare twelve-letter words that start with H
- habilimented
- habilitative
- habitualness
- habronematid
- hacktivistic
- hadalpelagic
- hadrocentric
- hadrodynamic
- hadrogenesis
- hadronically
- hadronuclear
- hadrosaurian
- hadrosaurine
- hadrosauroid
- haemafibrite
- haemantamine
- haemapoietic
- haematoblast
- haematocryal
- haematodocha
- haematogenic
- haematolysis
- haematolytic
- haematomania
- haematometer
- haematommone
- haematophage
- haematopinid
- haematotoxin
- haemochorial
- haemoderived
- haemogamasid
- haemogenesis
- haemonchosis
- haemoplastic
- haemopoiesis
- haemoproteid
- haemorrhagia
- haemotoxylin
- hagendorfite
- hagiographal
- hagiolatrous
- hagiological
- hagiotherapy
- hagiotoponym
- haidingerite
- haigerachite
- hainaneoside
- haineaultite
- hairbrushing
- hairfluencer
- hairmageddon
- hairsplitter
- halachically
- halalflation
- halalization
- halichondrid
- halichondrin
- halimococcid
- haliplankton
- halitophobia
- halityloside
- hallanshaker
- hallelujatic
- hallimondite
- hallowedness
- hallucinator
- hallucinosis
- hallucinotic
- haloaldehyde
- haloalkaline
- haloalkanoic
- haloarchaeal
- haloarchaeon
- haloaromatic
- haloboration
- halochromism
- halocinonide
- halocypridid
- haloethylene
- halofantrine
- halofenozide
- halofuginone
- halometasone
- halopyrazine
- halorespirer
- halosulfuron
- halotectonic
- halotolerant
- halotrichite
- halywercfolk
- hamantaschen
- hamarthritis
- hamartialogy
- hamartiology
- hammochrysos
- handbalancer
- handbuilding
- handclapping
- handholdable
- handholdless
- handicapable
- handicrafter
- handlessness
- handmadeness
- handmaidenly
- handsbreadth
- handscreened
- handstitched
- hangarkeeper
- hangarounder
- hangoverless
- hangoverlike
- hannebachite
- hapalodectid
- hapalonychia
- hapaxanthous
- haphazardous
- haplobiontic
- haplocaulous
- haploceratid
- haplocheilic
- haplodiploid
- haplogranite
- haplographic
- haplological
- haplosclerid
- haplosegment
- haploselfing
- haplosimilar
- happenchance
- happyologist
- haptenically
- haptenylated
- haptokinesis
- haptokinetic
- haptophycean
- haptotropism
- haramization
- hardhandedly
- hardheadedly
- hardwareless
- hardystonite
- harlequinery
- harlequinism
- harlequinize
- harmomegathy
- harmonicaist
- harmonichord
- harmoniphone
- harmoniumist
- harmonizable
- harmonograph
- harmonometer
- harnessmaker
- harpacticoid
- harpagiferid
- hartmannulid
- haruspicator
- harzburgitic
- hasenpfeffer
- hastingsitic
- hasubanonine
- hatchability
- hatchetation
- hatelessness
- haterumalide
- hauntingness
- hauntologist
- haustorially
- hawthorneite
- hazelnutlike
- headachingly
- headcovering
- headforemost
- headkerchief
- headlessness
- headlighting
- headlongness
- headmasterly
- headstarting
- headstrongly
- headtracking
- healthmaxxer
- hearsomeness
- heartburning
- heartcutting
- hearteningly
- heartfulness
- heartstopper
- heartthrobby
- heathcropper
- heathenishly
- heathenistic
- heathenizing
- heatheriness
- heatlessness
- heautoscopic
- heavenliness
- heavenwardly
- hebdomadally
- hebephreniac
- hebetudinous
- hectochlorin
- hectocotylus
- hectographic
- hectopsyllid
- hedenbergite
- hederacoside
- hederiferous
- hedgebreaker
- hedgehogless
- hedgehoglike
- hedgehopping
- hedgerowless
- hedonometric
- hedonophobia
- heellessness
- heelsplitter
- hegemonistic
- heirlessness
- hekistotherm
- helcionellid
- heleophrynid
- heliangolide
- helianthemum
- heliboarding
- helicarionid
- helicodiscid
- helicoidally
- helicopteron
- helicospiral
- helimagnetic
- heliobiology
- heliochromic
- heliographer
- heliogravure
- heliolatrous
- heliological
- heliophilous
- heliophobous
- heliornithid
- helioseismic
- heliotherapy
- heliothermic
- heliotropian
- heliotropism
- helioxanthin
- heliportable
- hellaciously
- hellgrammite
- hellzapoppin
- helmetmaking
- helmetshrike
- helminthosis
- helmlessness
- helmsmanship
- helodermatid
- helojaposide
- helotiaceous
- helveticosol
- hemangiocyte
- hemapheresis
- hemapheretic
- hemapophysis
- hemarthrosis
- hematochezia
- hematochrome
- hematocolpos
- hematocystic
- hematoimmune
- hematomyelia
- hematopathic
- hematophagic
- hematotrophy
- hematotropic
- hemeranthous
- hemerochoric
- hemerophobic
- hemiablation
- hemiacardius
- hemiacetalic
- hemiagenesis
- hemiagenetic
- hemialbumose
- hemiasterlin
- hemibiotroph
- hemicarbonic
- hemicastrate
- hemicatenane
- hemicerebral
- hemicerebrum
- hemichordate
- hemichromine
- hemicircular
- hemiclitoral
- hemiclitoris
- hemiclonally
- hemicondylar
- hemicylinder
The first 300 are shown.
Questions about these words
- How many twelve-letter words that start with H are there?
- Word.ws lists 180 twelve-letter words that start with H, plus 1,512 rare ones.
- What are common twelve-letter words that start with H?
- headquarters, historically, humanitarian, highlighting, hypothetical, hospitalized, homelessness and hypertension.
- Which of the twelve-letter words that start with H has the highest letter score?
- hydroxyethyl scores 35 points with the standard letter tile values.
Related word lists
Source and license
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: “12-Letter Words Starting with H: 180 Words.” Word.ws, https://word.ws/words/12-letter/starting-with-h. Based on Wiktionary, CC BY-SA 4.0.