13-Letter Words Starting with H
There are 104 thirteen-letter words that start with H on Word.ws, from haematologist to hypothecation. The most common are homosexuality, heartbreaking, headquartered, horticultural and hydroelectric.
Meanings from Wiktionary. Not an official Scrabble, Words With Friends or Wordle word list.
All 104 thirteen-letter words that start with H
HA
- haematologist19n. A scientist, usually a medical doctor, who specializes in haematology.
- haemodialysis22n. The use of dialysis to remove waste products from the blood in the case...
- haemorrhaging23n. Bleeding.
- halfheartedly26adv. With little enthusiasm or interest.
- hallucination18n. A sensory perception of something that does not exist, often arising...
- hallucinatory21adj. Partaking of, or tending to produce, hallucination.
- halobacterium22n. Any of various extremophiles, of genus Halobacterium, found in water...
- harmonisation18n. Non-Oxford British standard spelling of harmonization.
- harmonization27n. An act of harmonizing.
- hatemongering20n. The behaviour of a hatemonger; the spreading of hatred.
HE
- headquartered27adj. If an organization is headquartered somewhere, it has its headquarters...
- healthfulness22n. The characteristic of being healthful; healthiness; wholesomeness.
- heartbreaking23adj. That causes great grief, anguish or distress.
- heartlessness16n. The characteristic of being heartless.
- heartstopping21adj. Very exciting or shocking, as though to cause one's heart to skip beats.
- helicoptering21n. Transport by helicopter.
- heliocentrism20n. The theory that the Sun is the center of the universe.
- helminthiasis21n. Any of various infectious diseases comprising and developing from...
- helminthology25n. The branch of zoology related to the study of helminths (parasitic...
- hemagglutinin20n. An antigenic glycoprotein that causes agglutination of red blood cells.
- hematological21adj. Hematologic.
- hematopoiesis20n. The process by which blood cells are produced; it involves the...
- hematopoietic22adj. Of or pertaining to hematopoiesis.
- hemicellulose20n. A mixture of several plant polysaccharides, of smaller molecular weight...
- hemispherical25adj. Having the shape of half a sphere.
- hepatobiliary23adj. Of, pertaining to, or originating in the liver, bile ducts and gall...
- hermaphrodite24n. Cosexual: an organism possessing both types of gonads; a flower...
- hermeneutical20adj. Of or pertaining to hermeneutics (the study or theory of the methodical...
- herpetologist19n. One who studies reptiles and amphibians; a reptile and amphibian...
- heterochromia23n. An anatomical condition in which multiple pigmentations or colorings...
- heterodimeric21adj. Produced from two similar but different monomers.
- heterogeneity20n. Diversity.
- heterogeneous17adj. Diverse in kind or nature; composed of diverse parts.
- heteromorphic25adj. Having different forms in different stages of the life cycle.
- heteronuclear18adj. On different rings of a polycyclic organic molecule.
- heterothallic21adj. Producing male and female reproductive structures in different plants.
- heterotrophic23adj. Being a heterotroph.
- heuristically21adv. In a heuristic manner.
- hexamethylene31n. The divalent radical obtained by removing a hydrogen atom from each end...
HI
- hilariousness16n. The characteristic of being hilarious; hilarity.
- histiocytosis21n. An excess of histiocytes, associated with various rare diseases.
- histochemical25adj. Of or pertaining to histochemistry.
HO
- homeomorphism27n. A continuous bijection from one topological space to another, with...
- homeownership26n. The state of being a homeowner.
- homeschooling24n. Teaching children at home instead of sending them to school.
- homoeroticism22n. The state or quality of being homoerotic.
- homogeneously22adv. In a homogeneous manner.
- homosexuality28n. The state of being sexually and romantically attracted primarily or...
- homosociality23n. Socialization (social interaction, social relationships) with members...
- horizontality28n. Horizontalness.
- horsefeathers22interj. Indicates disbelief.
- horticultural18adj. Of or pertaining to horticulture; connected with gardening.
- housebreaking23n. The act of breaking into another person's house with unlawful intent.
- housebuilding20n. The building of houses.
- housecleaning19n. Collectively, the tasks involved with cleaning a house; the practice of...
HU
- humiliatingly22adv. In a humiliating manner.
- hundredweight25n. A unit of measurement containing 100 avoirdupois pounds (about 45.4 kg).
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...
1,293 rare thirteen-letter words that start with H
- habitableness
- habronemiasis
- hackneyedness
- hadrochemical
- hadrodynamics
- hadronization
- hadrontherapy
- haecceitistic
- haemanthidine
- haemaphysalin
- haematidrosis
- haematochrome
- haematogenous
- haematolagnia
- haematometric
- haematophilia
- haematophobia
- haematosepsis
- haemocoelomic
- haemoderivate
- haemodialysed
- haemodialytic
- haemodiluting
- haemoventosin
- hagiographist
- hagiographize
- halatopolymer
- halechiniscid
- halichondriid
- halictophagid
- halieutically
- halimedatrial
- halldorophone
- hallucinative
- haloacetamide
- haloacetylene
- haloadaptable
- haloaliphatic
- haloanhydride
- halobacterial
- halogenoderma
- halometallate
- halophilicity
- halophosphate
- halophosphine
- haloquinoline
- haloragaceous
- halorhodopsin
- halostability
- halotectonics
- halotolerance
- hamartomatous
- hamburgerless
- hamburgerlike
- hamfistedness
- hamletization
- handcraftsman
- handicappable
- handleability
- handsearching
- handsignalman
- hangulization
- haphazardness
- haploabnormal
- haplochromine
- haplodiploidy
- haplogenotype
- haplogranitic
- haplogrouping
- haploidentity
- haplolepidous
- haplometrosis
- haplometrotic
- haplospecific
- happinessless
- haptenization
- haptenylation
- haptoglobulin
- harbingership
- hardenability
- hardheartedly
- hardworkingly
- harmomegathic
- harmonizingly
- harpellaceous
- harringtonine
- harrowingness
- harrumphingly
- hartmanivirus
- hartmannellid
- haruspication
- harzialactone
- hastelessness
- hauchecornite
- hauntological
- hawkinsinuria
- hazardousness
- headboardless
- headmistressy
- headphoneless
- headphonelike
- headscarfless
- healthmaxxing
- healthwashing
- heartachingly
- heartbeatlike
- heartbrokenly
- heartfeltness
- heartsickness
- heartsomeness
- heartstricken
- heartswelling
- heazlewoodite
- hecastotheism
- hecatontarchy
- hechtsbergite
- hectokilogram
- hedenbergitic
- hederasaponin
- hedgelessness
- hedonometrics
- hedylopsacean
- hegemonically
- hegetotheriid
- heleoplankton
- helianthamide
- helianthoside
- heliciculture
- helicophagous
- helicoplacoid
- helicopsychid
- helicopterful
- helicosporous
- helictoglossa
- helimagnetism
- heliochromism
- helioelectric
- heliolatitude
- heliomagnetic
- heliometrical
- heliophyllite
- heliotheistic
- heliotropical
- helispherical
- hellebrigenin
- hellebrigenol
- helminthicide
- helvellaceous
- helveticoside
- hemadsorption
- hemangioblast
- hemangiogenic
- hemapophyseal
- hemapophysial
- hematinometer
- hematogenesis
- hematomatosis
- hematophanite
- hematopoietin
- hematosalpinx
- hematospermia
- hematospermic
- hematothermal
- hematotrophic
- hemerochorous
- hemerological
- hemiabdominal
- hemiamaurosis
- hemiballismus
- hemibiotrophy
- hemicastrated
- hemicatenated
- hemicellulase
- hemicholinium
- hemicolectomy
- hemicontusion
- hemicontusive
- hemicorporeal
- hemicylindric
- hemidactyline
- hemidecussate
- hemidesmosome
- hemidiaphragm
- hemidiscoidal
- hemidysplasia
- hemidystrophy
- hemiellipsoid
- hemiepiphytic
- hemiforebrain
- hemigigantism
- hemiglossitis
- hemilaterally
- hemimandibula
- hemimellitene
- hemimetabolan
- hemimetabolic
- hemimetameric
- hemineuromere
- hemiorbicular
- hemiparalexia
- hemiparalysis
- hemiparalytic
- hemiparasitic
- hemipenectomy
- hemiphasmidic
- hemipterology
- hemisectioned
- hemisegmental
- hemisuccinate
- hemisynthesis
- hemisynthetic
- hemiterpenoid
- hemitripterid
- hemivertebral
- hemoadsorbent
- hemoarthrosis
- hemobilinuria
- hemoblastosis
- hemocapillary
- hemocateresis
- hemocateretic
- hemocatharsis
- hemocathartic
- hemochorionic
- hemocoagulase
- hemocomponent
- hemocytoblast
- hemocytometer
- hemocytometry
- hemocytopenia
- hemocytopenic
- hemodepleting
- hemodepletion
- hemodiafilter
- hemodialysate
- hemodynamical
- hemoglobinase
- hemoglobinize
- hemoglobinous
- hemolymphatic
- hemolytically
- hemoparasitic
- hemopathology
- hemoperfusion
- hemophagocyte
- hemophthalmia
- hemophthalmos
- hemoplasmosis
- hemoporphyrin
- hemoprotozoan
- hemorheologic
- hemosensitive
- hemosiderosis
- hemosiderotic
- hemovigilance
- henceforwards
- hendecahedral
- hendecahedron
- heneicosanoic
- heneicosanoyl
- henrymeyerite
- heortological
- hepatectomize
- hepatoadenoma
- hepatoblastic
- hepatocardiac
- hepatocuprein
- hepatoenteric
- hepatogastric
- hepatogenesis
- hepatographic
- hepatojugular
- hepatolobular
- hepatological
- hepatomalacia
- hepatomitogen
- hepatomphalos
- hepatonephric
- hepatophrenic
- hepatoprotein
- hepatorrhagia
- hepatorrhaphy
- hepatorrhexis
- hepatosomatic
- hepatosplenic
- hepatotherapy
- hepatotoxemia
- hepatotrophic
- hepatotropism
- heptaacylated
- heptachloride
- heptacontagon
- heptacosanoic
- heptadecanoic
- heptadecanoyl
- heptadecenoic
- heptadecenoyl
- heptadiagonal
- heptafluoride
- heptafulvenic
The first 300 are shown.
Questions about these words
- How many thirteen-letter words that start with H are there?
- Word.ws lists 104 thirteen-letter words that start with H, plus 1,293 rare ones.
- What are common thirteen-letter words that start with H?
- homosexuality, heartbreaking, headquartered, horticultural, hydroelectric, heterogeneous, hallucination and hyperactivity.
- Which of the thirteen-letter words that start with H has the highest letter score?
- hydroxyphenyl scores 38 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: “13-Letter Words Starting with H: 104 Words.” Word.ws, https://word.ws/words/13-letter/starting-with-h. Based on Wiktionary, CC BY-SA 4.0.