Fifteen-letter words
There are 7,464 fifteen-letter words in our dictionary. Browse them by starting letter below, or jump to the ones you are most likely to need — the everyday words and the highest-scoring Scrabble plays.
Most common fifteen-letter words
Ranked by how often they appear in written English.
- recommendations
- characteristics
- representatives
- telecommunications
- responsibilities
- pharmaceuticals
- congratulations
- representations
- troubleshooting
- internationally
- characterization
- confidentiality
- instrumentation
- notwithstanding
- vulnerabilities
- interdisciplinary
- straightforward
- implementations
- differentiation
- environmentally
- synchronization
- accomplishments
- telecommunication
- interoperability
Highest-scoring fifteen-letter words
Standard Scrabble tile values, before any board multipliers.
- hypophysectomizing 48
- carboxymethylcelluloses 47
- electroencephalographically 47
- hypophysectomized 47
- carboxymethylcellulose 46
- hypophysectomizes 46
- phosphoglyceraldehydes 46
- hydrochlorothiazides 45
- hypophysectomize 45
- phosphoglyceraldehyde 45
- psychophysiologically 45
- hydrochlorothiazide 44
- phosphatidylethanolamines 44
- dimethylhydrazines 43
- hexamethylenetetramines 43
- parathyroidectomized 43
- phosphatidylethanolamine 43
- psychopharmacological 43
- puzzleheadednesses 43
- anthropomorphizations 42
- chlordiazepoxides 42
- cholecystectomized 42
- dimethylhydrazine 42
- hexamethylenetetramine 42
All 7,464 fifteen-letter words
A 467
- absentmindedness
- absentmindednesses
- absorbabilities
- abstemiousnesses
- abstractednesses
- abstractionisms
- abstractionists
- acanthocephalan
- acanthocephalans
- acceptabilities
- acceptablenesses
- acceptingnesses
- accessibilities
- accessiblenesses
- accidentalnesses
- acclimatization
- acclimatizations
- accommodatingly
- accommodational
- accommodationist
- accommodationists
- accommodativeness
- accommodativenesses
- accomplishments
- accountabilities
- accountableness
- accountablenesses
- accountantships
- acculturational
- accumulativeness
- accumulativenesses
- accustomednesses
- acetophenetidin
- acetophenetidins
- acetylcholinesterase
- acetylcholinesterases
B 120
- backscatterings
- bacteriochlorophyll
- bacteriochlorophylls
- bacteriological
- bacteriologically
- bacteriologists
- bacteriophagies
- bacteriorhodopsin
- bacteriorhodopsins
- barbarousnesses
- barefacednesses
- basidiomycetous
- bastardizations
- bathymetrically
- bathythermograph
- bathythermographs
- beauteousnesses
- beautifications
- beautifulnesses
- believabilities
- belongingnesses
- beneficialnesses
- benevolentnesses
- benightednesses
- benzanthracenes
- benzodiazepines
- bewilderednesses
- bibliographical
- bibliographically
- bibliotherapies
- bidialectalisms
- bidirectionally
- bigheartednesses
- bioavailabilities
- bioavailability
- biocompatibilities
C 808
- calculatednesses
- calligraphically
- calorimetrically
- cannibalization
- cannibalizations
- cantankerousness
- cantankerousnesses
- capaciousnesses
- capitalistically
- capitalizations
- capriciousnesses
- carboxymethylcellulose
- carboxymethylcelluloses
- carboxypeptidase
- carboxypeptidases
- carcinogenicities
- carcinogenicity
- carcinomatosises
- carcinosarcomas
- carcinosarcomata
- cardiomyopathies
- cardiopulmonary
- cardiorespiratory
- carnivorousness
- carnivorousnesses
- carpetbaggeries
- cartographically
- catachrestically
- cataclysmically
- cataphoretically
- catastrophically
- catecholaminergic
- categorizations
- catheterization
- catheterizations
- ceaselessnesses
D 516
- daguerreotypies
- daguerreotyping
- daguerreotypist
- daguerreotypists
- damageabilities
- dangerousnesses
- dastardlinesses
- dauntlessnesses
- deacidification
- deacidifications
- deathlessnesses
- decaffeinations
- decalcification
- decalcifications
- decarboxylating
- decarboxylation
- decarboxylations
- decarburization
- decarburizations
- decasualization
- decasualizations
- deceitfulnesses
- decentralization
- decentralizations
- deceptivenesses
- decertification
- decertifications
- dechlorinations
- deciduousnesses
- decimalizations
- declassification
- declassifications
- decolonizations
- decolorizations
- decommissioning
- decompensations
E 374
- easygoingnesses
- ecclesiastically
- ecclesiasticism
- ecclesiasticisms
- ecclesiological
- ecclesiologists
- echinodermatous
- echocardiograms
- echocardiographer
- echocardiographers
- echocardiographic
- echocardiographies
- echocardiography
- eclaircissement
- eclaircissements
- ecocatastrophes
- econometrically
- econometricians
- ecophysiological
- ecophysiologies
- editorialization
- editorializations
- educationalists
- effectivenesses
- effectualnesses
- efficaciousness
- efficaciousnesses
- effortfulnesses
- effortlessnesses
- egalitarianisms
- eggheadednesses
- egocentricities
- egregiousnesses
- elaboratenesses
- electrification
- electrifications
F 109
- facetiousnesses
- factitiousnesses
- faintheartedness
- faintheartednesses
- faithlessnesses
- fallaciousnesses
- falsifiabilities
- familiarization
- familiarizations
- fanaticalnesses
- fantasticalities
- fantasticalness
- fantasticalnesses
- fantastications
- farfetchednesses
- farsightednesses
- fashionabilities
- fashionableness
- fashionablenesses
- fastidiousnesses
- fatheadednesses
- fathomlessnesses
- faultlessnesses
- favorablenesses
- featherbeddings
- featherstitched
- featherstitches
- featherstitching
- federalizations
- feeblemindedness
- feeblemindednesses
- felicitousnesses
- feloniousnesses
- fencelessnesses
- ferociousnesses
- ferrimagnetically
G 96
- garrulousnesses
- gastroenteritides
- gastroenteritis
- gastroenteritises
- gastroenterological
- gastroenterologies
- gastroenterologist
- gastroenterologists
- gastroenterology
- gastroesophageal
- gastrointestinal
- gastronomically
- gedankenexperiment
- gedankenexperiments
- gelatinizations
- gelatinousnesses
- generalisations
- generalizabilities
- generalizability
- generalizations
- gentlemanlikeness
- gentlemanlikenesses
- gentlemanliness
- gentlemanlinesses
- gentrifications
- geochronological
- geochronologically
- geochronologies
- geochronologist
- geochronologists
- geohydrologists
- geomagnetically
- geometrizations
- geomorphological
- geomorphologies
- geomorphologist
H 301
- habitablenesses
- halfheartedness
- halfheartednesses
- hallucinogenics
- handcraftsmanship
- handcraftsmanships
- haphazardnesses
- hardhandednesses
- hardheadednesses
- hardheartedness
- hardheartednesses
- harmoniousnesses
- harpsichordists
- hazardousnesses
- headmasterships
- healthfulnesses
- heartbreakingly
- heartlessnesses
- heartsicknesses
- heavyheartedness
- heavyheartednesses
- heliometrically
- helminthologies
- hemagglutinated
- hemagglutinates
- hemagglutinating
- hemagglutination
- hemagglutinations
- hematoporphyrin
- hematoporphyrins
- hemidemisemiquaver
- hemidemisemiquavers
- hemochromatoses
- hemochromatosis
- hemochromatosises
- hemodynamically
I 860
- ichthyologically
- ichthyosaurians
- iconoclastically
- iconographically
- identicalnesses
- identifications
- ideographically
- idiomaticnesses
- idiosyncratically
- idolatrousnesses
- ignominiousness
- ignominiousnesses
- illegalizations
- illiberalnesses
- illimitabilities
- illimitableness
- illimitablenesses
- illiteratenesses
- illogicalnesses
- illusionistically
- illustriousness
- illustriousnesses
- imaginablenesses
- imaginarinesses
- imaginativeness
- imaginativenesses
- imitativenesses
- immaterialities
- immaterializing
- immeasurableness
- immeasurablenesses
- immediatenesses
- immiscibilities
- immobilizations
- immoderatenesses
- immortalization
J 8
- journalistically
- judiciousnesses
- jurisdictionally
- jurisprudential
- jurisprudentially
- justiciabilities
- justifiabilities
- juxtapositional
K 17
- kaffeeklatsches
- kaleidoscopically
- keratinizations
- keratoconjunctivites
- keratoconjunctivitides
- keratoconjunctivitis
- keratoconjunctivitises
- kindergarteners
- kindheartedness
- kindheartednesses
- kinesthetically
- kittenishnesses
- knowledgeabilities
- knowledgeability
- knowledgeableness
- knowledgeablenesses
- kremlinologists
L 84
- laboriousnesses
- labyrinthodonts
- lackadaisically
- lamentablenesses
- landlubberliness
- landlubberlinesses
- largeheartedness
- largeheartednesses
- laryngectomized
- lasciviousnesses
- latensification
- latensifications
- lateralizations
- latitudinarianism
- latitudinarianisms
- latitudinarians
- laughablenesses
- lecherousnesses
- legislatorships
- legitimizations
- leisurelinesses
- lepidopterological
- lepidopterologies
- lepidopterologist
- lepidopterologists
- lepidopterology
- leukaemogeneses
- leukaemogenesis
- leukodystrophies
- levelheadedness
- levelheadednesses
- lexicalisations
- lexicalizations
- lexicographical
- lexicographically
- liberalizations
M 478
- machinabilities
- machineabilities
- macroaggregated
- macroaggregates
- macrocosmically
- macroevolutionary
- macroevolutions
- macroglobulinemia
- macroglobulinemias
- macroglobulinemic
- macroinstruction
- macroinstructions
- macrolepidoptera
- macrophotograph
- macrophotographies
- macrophotographs
- macrophotography
- macroscopically
- macrostructural
- macrostructures
- magistratically
- magnanimousness
- magnanimousnesses
- magnetoelectric
- magnetofluiddynamics
- magnetohydrodynamic
- magnetohydrodynamics
- magnetoresistance
- magnetoresistances
- magnetostriction
- magnetostrictions
- magnetostrictive
- magnetostrictively
- maintainabilities
- maintainability
- majoritarianism
N 337
- nanotechnologies
- nationalistically
- nationalization
- nationalizations
- naturalistically
- naturalizations
- nearsightedness
- nearsightednesses
- necessitarianism
- necessitarianisms
- necessitousness
- necessitousnesses
- necromantically
- neglectfulnesses
- negligibilities
- negotiabilities
- neighborlinesses
- neocolonialisms
- neocolonialists
- neoconservatism
- neoconservatisms
- neoconservative
- neoconservatives
- nephelometrically
- nephrectomizing
- nephrotoxicities
- nervelessnesses
- neurasthenically
- neuroanatomical
- neuroanatomists
- neurobiological
- neurobiologists
- neuroblastomata
- neurochemistries
- neurodegenerative
- neuroendocrinological
O 340
- objectification
- objectifications
- objectionableness
- objectionablenesses
- objectivenesses
- objectlessnesses
- obliviousnesses
- obnoxiousnesses
- obsequiousnesses
- observabilities
- observationally
- obsessivenesses
- obstinatenesses
- obstreperousness
- obstreperousnesses
- obstructionisms
- obstructionistic
- obstructionists
- obstructiveness
- obstructivenesses
- obtainabilities
- obtrusivenesses
- occidentalizing
- oceanographical
- oceanographically
- odoriferousness
- odoriferousnesses
- offensivenesses
- offhandednesses
- officiousnesses
- oleaginousnesses
- oligodendrocyte
- oligodendrocytes
- oligodendroglia
- oligodendroglial
- oligodendroglias
P 859
- paedogenetically
- painterlinesses
- palatablenesses
- palatalizations
- paleoanthropological
- paleoanthropologies
- paleoanthropologist
- paleoanthropologists
- paleoanthropology
- paleobiological
- paleobiologists
- paleobotanically
- paleoclimatologies
- paleoclimatologist
- paleoclimatologists
- paleoclimatology
- paleoecological
- paleoecologists
- paleogeographic
- paleogeographical
- paleogeographically
- paleogeographies
- paleographically
- paleomagnetically
- paleomagnetisms
- paleomagnetists
- paleontological
- paleontologists
- paleopathological
- paleopathologies
- paleopathologist
- paleopathologists
- paleozoological
- paleozoologists
- palynologically
- pancreatectomies
Q 28
- quadricentennial
- quadricentennials
- quadruplicating
- quadruplication
- quadruplications
- quadruplicities
- quantificational
- quantificationally
- quantifications
- quantitativeness
- quantitativenesses
- quarrelsomeness
- quarrelsomenesses
- quarterfinalist
- quarterfinalists
- quasiperiodicities
- quasiperiodicity
- quatercentenaries
- quatercentenary
- quattuordecillion
- quattuordecillions
- querulousnesses
- questionableness
- questionablenesses
- quincentenaries
- quincentennials
- quintessentially
- quintuplicating
R 372
- radicalizations
- radioactivities
- radioallergosorbent
- radioautographic
- radioautographies
- radioautographs
- radioautography
- radiobiological
- radiobiologically
- radiobiologists
- radiochemically
- radiochemistries
- radiochromatogram
- radiochromatograms
- radiographically
- radioimmunoassay
- radioimmunoassayable
- radioimmunoassays
- radioisotopically
- radiometrically
- radiopharmaceutical
- radiopharmaceuticals
- radioprotection
- radioprotections
- radioprotective
- radiosensitivities
- radiosensitivity
- radiostrontiums
- radiotelegraphies
- radiotelegraphs
- radiotelegraphy
- radiotelemetric
- radiotelemetries
- radiotelephones
- radiotelephonies
- radiotherapists
S 562
- sabermetricians
- saccharification
- saccharifications
- sacramentalisms
- sacramentalists
- sacrilegiousness
- sacrilegiousnesses
- sacrosanctities
- sadomasochistic
- sagaciousnesses
- salaciousnesses
- salubriousnesses
- salvageabilities
- sanctifications
- sanctimoniously
- sanctimoniousness
- sanctimoniousnesses
- saponaceousness
- saponaceousnesses
- saponifications
- saprogenicities
- saprophytically
- satisfactoriness
- satisfactorinesses
- scandalmongering
- scandalmongerings
- scandalousnesses
- schematizations
- schistosomiases
- schistosomiasis
- schizophrenically
- schlockmeisters
- schoolmasterish
- schoolmistresses
- scintillometers
- sclerenchymatous
T 285
- tachistoscopically
- tachyarrhythmia
- tachyarrhythmias
- talkativenesses
- tarsometatarsus
- tastelessnesses
- tatterdemalions
- teachablenesses
- technicalization
- technicalizations
- technologically
- technostructure
- technostructures
- telangiectasias
- telecommunication
- telecommunications
- teleconferenced
- teleconferences
- teleconferencing
- teleconferencings
- telegraphically
- telekinetically
- telephotographies
- telephotography
- teleprocessings
- teletypewriters
- temerariousness
- temerariousnesses
- temperamentally
- temperatenesses
- tempestuousness
- tempestuousnesses
- temporarinesses
- temporomandibular
- tenaciousnesses
- tendentiousness
U 347
- ubiquitousnesses
- ultimogenitures
- ultracentrifugal
- ultracentrifugally
- ultracentrifugation
- ultracentrifugations
- ultracentrifuge
- ultracentrifuged
- ultracentrifuges
- ultracentrifuging
- ultracommercial
- ultraconservatism
- ultraconservatisms
- ultraconservative
- ultraconservatives
- ultracontemporaries
- ultracontemporary
- ultraconvenient
- ultrademocratic
- ultrafastidious
- ultrafiltration
- ultrafiltrations
- ultraliberalism
- ultraliberalisms
- ultralightweight
- ultramarathoner
- ultramarathoners
- ultramicroscope
- ultramicroscopes
- ultramicroscopic
- ultramicroscopical
- ultramicroscopically
- ultramicrotomes
- ultramicrotomies
- ultraminiaturized
- ultramodernists
V 55
- vaingloriousness
- vaingloriousnesses
- valetudinarianism
- valetudinarianisms
- valetudinarians
- valuelessnesses
- vascularization
- vascularizations
- vasoconstriction
- vasoconstrictions
- vasoconstrictive
- vasoconstrictor
- vasoconstrictors
- vasodilatations
- vegetativenesses
- venerablenesses
- ventriloquially
- ventriloquistic
- ventriloquizing
- venturesomeness
- venturesomenesses
- venturousnesses
- veraciousnesses
- verifiabilities
- verifiablenesses
- verisimilitudes
- verisimilitudinous
- veritablenesses
- versatilenesses
- vexatiousnesses
- vicariousnesses
- vicissitudinous
- victoriousnesses
- videoconference
- videoconferences
- videoconferencing
W 36
- wappenschawings
- warmheartedness
- warmheartednesses
- warrantableness
- warrantablenesses
- waterlessnesses
- waterproofnesses
- watertightnesses
- wearisomenesses
- weatherabilities
- weatherboarding
- weatherboardings
- weatherizations
- weatherproofing
- weatherproofness
- weatherproofnesses
- weightlessnesses
- weltanschauungen
- weltanschauungs
- westernisations
- westernizations
- whatchamacallit
- whatchamacallits
- whimsicalnesses
- whippersnappers
- whistleblowings
- wholesomenesses
- withdrawnnesses
- woebegonenesses
- wonderfulnesses
- worrisomenesses
- worshipfulnesses
- worthlessnesses
- worthwhilenesses
- wrongheadedness
- wrongheadednesses
X 3
- xerographically
- xeroradiographies
- xeroradiography
Z 2
- zoogeographical
- zoogeographically
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Common questions
How many fifteen-letter words are there?
Our dictionary contains 7,464 fifteen-letter words. It is built from ENABLE, the public-domain lexicon most word games use, so it covers far more than everyday vocabulary — see the sources page for details.
What are the most common fifteen-letter words?
Ranked by how often they appear in written English, the most common are: recommendations, characteristics, representatives, telecommunications, responsibilities, pharmaceuticals, congratulations, representations. The full "most common" list is near the top of this page.
What is the highest-scoring fifteen-letter word in Scrabble?
hypophysectomizing scores 48 points on plain tiles, before any double- or triple-word squares. Premium squares and the 50-point bingo bonus can change the ranking completely.
Are proper nouns and abbreviations included?
No. The list only contains words from the ENABLE lexicon, which excludes proper nouns, abbreviations and hyphenated forms — the same rule tournament Scrabble and most word games follow. Read more on the methodology page.
Counted from a 172,749-word public-domain lexicon, last reviewed 2026-08-01. How this list was built.