15-Letter Words Starting with H
There are 37 fifteen-letter words that start with H on Word.ws, from heartbreakingly to hypoventilation. The most common are hospitalization, heterosexuality, hyperthyroidism, humanitarianism and heteronormative.
Meanings from Wiktionary. Not an official Scrabble, Words With Friends or Wordle word list.
All 37 fifteen-letter words that start with H
- heartbreakingly28adv. In a heartbreaking manner.
- hemangiosarcoma25n. A fast-growing, highly invasive variety of cancer, a sarcoma arising...
- hemispherectomy32n. Surgical removal of a hemisphere of the brain, usually performed to...
- hemochromatosis27n. A metabolic disorder causing iron deposits in the body.
- hemodynamically31adv. With regard to hemodynamics.
- hermaphroditism28n. The condition of an organism that is able to reproduce as both male and...
- heterochromatic27adj. Having more than one colour; relating to heterochromia.
- heterochromatin25n. Heterochromatic tightly coiled chromosome material; believed to be...
- heterogeneously22adv. In a heterogeneous manner.
- heteronormative23adj. Of or relating to the institutions and practices that privilege or...
- heterosexuality28n. The state of being sexually and romantically attracted primarily or...
- heterostructure20n. Any structure made from a heterojunction.
- histopathologic26adj. Of or pertaining to histopathology.
- historiographer24n. A scholar who studies historiography.
- historiographic26adj. Relating to the writing of history.
- holographically29adv. In a holographic way.
- horticulturally23adv. With respect to horticulture.
- hospitalization29n. The hospitalizing of a patient, the condition of being hospitalized, or...
- humanitarianism22n. A humanitarian philosophy or practice.
- hydrogeological26adj. Of or pertaining to hydrogeology.
- hydrometallurgy28n. The field of extractive metallurgy involving the use of aqueous...
- hydrostatically27adv. In a hydrostatic manner.
- hydroxybenzoate43n. Any salt or ester of hydroxybenzoic acid.
- hydroxybutyrate37n. Any salt or ester of hydroxybutyric acid, but especially of...
- hydroxycinnamic38adj. Derived from or pertaining to hydroxycinnamic acid.
- hyperactivation28n. A form of sperm motility associated with active beating of the...
- hypercoagulable28adj. Having an increased tendency to clot.
- hypercorrection27n. Nonstandard language use that results from the overapplication of a...
- hyperinsulinism25n. Hyperinsulinemia.
- hypermethylated32adj. Methylated to an abnormally high degree.
- hyperthyroidism32n. The excessive production of hormones by the thyroid.
- hypoalbuminemia29n. The presence of an abnormally low concentration of albumin in the blood.
- hypochondriacal31adj. Suffering from hypochondria.
- hypochondriasis29n. A mental disorder (in some classifications of such disorders, including...
- hypomethylation31n. A decrease in the epigenetic methylation of cytosine and adenosine...
- hypopituitarism27n. A decrease in secretion of one or more of the eight hormones normally...
- hypoventilation26n. Respiratory depression, occurring when ventilation is inadequate to...
917 rare fifteen-letter words that start with H
- haberdasherware
- habilimentation
- habitualization
- hadroproduction
- hadrosauromorph
- haemadromograph
- haematachometer
- haematoclinical
- halfheartedness
- halichondramide
- halidohydrolase
- hallucinatingly
- hallucinational
- hallucinatorily
- haloalkaliphile
- halocyclization
- halohydrocarbon
- halokinetically
- halonaphthalene
- halonitroalkane
- haloragidaceous
- halorespiration
- hamabiwalactone
- hamamelidaceous
- hamartialogical
- hamartiological
- handcraftedness
- handcraftswoman
- handicapitalism
- handkerchiefful
- haplodeficiency
- haploproficient
- haplosimilarity
- haplostephanous
- haplosufficient
- haptoattractant
- haptotactically
- haptotropically
- harbourlessness
- hardheartedness
- hardworkingness
- harmandianamine
- harmonistically
- harmonizability
- harpactophagous
- harpsichordlike
- hauntologically
- healthification
- heartbrokenness
- heartstoppingly
- hectorfloresite
- helcionellacean
- helianthophobia
- helicoidization
- helicosporidian
- heliocentricity
- heliochromotype
- helioelectrical
- helioflagellate
- heliometrically
- heliomicroscopy
- helioseismology
- heliotomography
- heliotropically
- heliotypography
- helminthologist
- helminthophobia
- helminthosporal
- helminthosporic
- helminthosporin
- hemadynamometer
- hemagglutinated
- hemangioblastic
- hemangiogenesis
- hemangiomatosis
- hemangiopoietic
- hematochemistry
- hematocytometer
- hematocytometry
- hematocytopenia
- hematogenically
- hematologically
- hematomalignant
- hematopathology
- hematoporphyria
- hematoporphyrin
- hematoprotozoan
- hemelipoprotein
- hemicraniectomy
- hemicryptophyte
- hemicrystalline
- hemicylindrical
- hemidecorticate
- hemidecussation
- hemiellipsoidal
- hemiequilateral
- hemifluorinated
- hemiglossectomy
- hemigossypolone
- hemihepatectomy
- hemihyperplasia
- hemihypertrophy
- hemihypesthesia
- hemilaminectomy
- hemimethylation
- heminephrectomy
- hemiparesthesia
- hemiparkinsonic
- hemipterologist
- hemiscrotectomy
- hemispherically
- hemisynchronous
- hemitransection
- hemivariational
- hemochromatotic
- hemocoagulation
- hemoconcentrate
- hemocytological
- hemoendothelial
- hemoflagellated
- hemomediastinum
- hemoparasitemia
- hemopathologist
- hemopericardium
- hemopoietically
- hemoreperfusion
- hemorheological
- hemorrhagically
- hemorrhoidopexy
- hemosensitivity
- hemosiderinuria
- hemosiderophage
- hemotherapeutic
- hemotransfusion
- hendecasyllabic
- hendecasyllable
- henricosborniid
- henritermierite
- hentetracontane
- hepaticobiliary
- hepaticojejunal
- hepaticological
- hepatocarcinoma
- hepatocirrhosis
- hepatocytolysis
- hepatocytotoxic
- hepatodysentery
- hepatoenteritis
- hepatogenically
- hepatohistology
- hepatolithiasis
- hepatolobectomy
- hepatomelanosis
- hepatomitogenic
- hepatopathology
- hepatopneumonic
- hepatoprotector
- hepatopulmonary
- hepatoselective
- hepatosiderosis
- hepatosplenitis
- hepatosteatitis
- hepatosteatosis
- hepatosteatotic
- hepatotoxicosis
- hepatoumbilical
- heptabrominated
- heptadecahedron
- heptadecatriene
- heptadeuterated
- heptafunctional
- heptahexahedral
- heptakaidecagon
- heptamerization
- heptanucleotide
- heptaphosphorus
- heptasaccharide
- heptopyranoside
- herbertsmithite
- herbivorization
- herbivorousness
- hereditarianism
- hereditarianist
- hereinelsewhere
- hermaphroditish
- hermaphroditize
- hermeneutically
- hermeneuticized
- herostratically
- herpetocultural
- hesperornithean
- hesperornithine
- heterarchically
- heteroaggregate
- heteroanamnesis
- heteroanhydride
- heteroarotinoid
- heteroarylation
- heteroarylether
- heteroarylidene
- heteroassociate
- heteroazeotrope
- heterobeltiosis
- heterobinuclear
- heterobiography
- heterobranchian
- heterocatalysis
- heterocatalytic
- heterocephalous
- heterocercality
- heterochaperone
- heterochirality
- heterochthonous
- heterocliticity
- heteroclonality
- heterococcolith
- heterocolporate
- heterocoralloid
- heterocrosslink
- heterodactylism
- heterodactylous
- heterodecameric
- heterodiasporic
- heterodichogamy
- heterodinuclear
- heterodisulfide
- heterododecamer
- heterodontosaur
- heteroenzymatic
- heteroepitactic
- heteroepitaxial
- heteroeroticism
- heterofermenter
- heterofullerene
- heterofulvenoid
- heterogangliate
- heterogeneicity
- heteroglycoside
- heterogonically
- heterohexameric
- heterohybridoma
- heteroimitative
- heterointerface
- heterokaryotype
- heterologically
- heterolytically
- heteromericarpy
- heterometabolic
- heteromolecular
- heteromonocycle
- heteromonolayer
- heteromonomeric
- heteromorphemic
- heteromorphosis
- heteromorphotic
- heteromycotroph
- heteronemertean
- heteronormality
- heteronormalize
- heterooctameric
- heteroousianism
- heteropaternity
- heteropentalene
- heteropessimism
- heteropessimist
- heterophagosome
- heteroplasmatic
- heteropolyanion
- heteropolymeric
- heteroprejudice
- heteropterology
- heteroqueerness
- heteroresistant
- heterorhabditid
- heteroscedastic
- heterosegmental
- heterosexualism
- heterosexualist
- heterosexualize
- heterosociality
- heterosubstrate
- heterosupremacy
- heterosynkaryon
- heterosynthesis
- heterosynthetic
- heterotacticity
- heterotelomeric
- heterotolerance
- heterotopically
- heterotricyclic
- heterotrimerize
- heterotungstate
- heterotypically
- hexachlorophene
- hexacoordinated
- hexadecahedroid
- hexadecahydrate
- hexadecahydroxy
- hexadecapeptide
- hexadecarsenide
The first 300 are shown.
Questions about these words
- How many fifteen-letter words that start with H are there?
- Word.ws lists 37 fifteen-letter words that start with H, plus 917 rare ones.
- What are common fifteen-letter words that start with H?
- hospitalization, heterosexuality, hyperthyroidism, humanitarianism, heteronormative, heartbreakingly, hemochromatosis and heterochromatin.
- Which of the fifteen-letter words that start with H has the highest letter score?
- hydroxybenzoate scores 43 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: “15-Letter Words Starting with H: 37 Words.” Word.ws, https://word.ws/words/15-letter/starting-with-h. Based on Wiktionary, CC BY-SA 4.0.