15 letter words
3,190 words, all 15 letters. Highest score OXYPHENBUTAZONE (40 points).
Highest scoring
- oxyphenbutazone40
- extrajudicially39
- ventriloquizing39
- cyclohexylamine36
- hyperimmunizing36
- hypnotizability36
- psychoanalyzing36
- squeezabilities36
- benzodiazepines35
- demythologizing35
- juxtapositional35
- psychobiography35
Starting with A 220
- absorbabilities
- abstractionisms
- abstractionists
- acanthocephalan
- acceptabilities
- acceptingnesses
- accessibilities
- acclimatization
- accommodatingly
- accommodational
- accomplishments
- accountableness
- accountantships
- acculturational
- acetophenetidin
- achondroplasias
- achondroplastic
- acknowledgement
- acknowledgments
- acquisitiveness
- acrimoniousness
- adenocarcinomas
- adenohypophyses
- adenohypophysis
- adjustabilities
- administrations
- admirablenesses
- admissibilities
- adrenalectomies
- adventurousness
- adversarinesses
- advisablenesses
- aerodynamically
- aerodynamicists
- aerosolizations
- affectabilities
- affordabilities
- agglutinability
- aggrandizements
- aggregatenesses
Starting with B 65
- backscatterings
- bacteriological
- bacteriologists
- bacteriophagies
- barbarousnesses
- barefacednesses
- basidiomycetous
- bastardizations
- bathymetrically
- beauteousnesses
- beautifications
- beautifulnesses
- believabilities
- belongingnesses
- benightednesses
- benzanthracenes
- benzodiazepines
- bibliographical
- bibliotherapies
- bidialectalisms
- bidirectionally
- bioavailability
- biodegradations
- bioengineerings
- biogeochemicals
- biogeochemistry
- biogeographical
- bioluminescence
- biomathematical
- biomechanically
- biostatistician
- biostratigraphy
- biosystematists
- biotechnologies
- biotechnologist
- bipartisanships
- bipolarizations
- bittersweetness
- bituminizations
- blamelessnesses
Starting with C 320
- cannibalization
- capaciousnesses
- capitalizations
- carcinogenicity
- carcinosarcomas
- cardiopulmonary
- carnivorousness
- carpetbaggeries
- cataclysmically
- categorizations
- catheterization
- ceaselessnesses
- centralizations
- centrifugations
- centrosymmetric
- cephalothoraces
- cephalothoraxes
- cerebrovascular
- ceremoniousness
- chancellorships
- changeabilities
- changefulnesses
- channelizations
- characteristics
- cheerlessnesses
- chemoautotrophy
- chemoreceptions
- chemotactically
- chemotaxonomies
- chemotaxonomist
- chemotherapists
- childlessnesses
- childlikenesses
- chincherinchees
- chloramphenicol
- chlorothiazides
- chlorpromazines
- chlorpropamides
- cholangiography
- cholecalciferol
Starting with D 227
- daguerreotypies
- daguerreotyping
- daguerreotypist
- damageabilities
- dangerousnesses
- dastardlinesses
- dauntlessnesses
- deacidification
- deathlessnesses
- decaffeinations
- decalcification
- decarboxylating
- decarboxylation
- decarburization
- decasualization
- deceitfulnesses
- deceptivenesses
- decertification
- dechlorinations
- deciduousnesses
- decimalizations
- decolonizations
- decolorizations
- decommissioning
- decompensations
- decomposability
- deconcentrating
- deconcentration
- deconsecrations
- deconstructions
- decontaminating
- decontamination
- decontaminators
- decriminalizing
- dedifferentiate
- deductibilities
- defeasibilities
- defectivenesses
- defeminizations
- defenestrations
Starting with E 157
- easygoingnesses
- ecclesiasticism
- ecclesiological
- ecclesiologists
- echinodermatous
- echocardiograms
- eclaircissement
- ecocatastrophes
- econometrically
- econometricians
- ecophysiologies
- educationalists
- effectivenesses
- effectualnesses
- efficaciousness
- effortfulnesses
- egalitarianisms
- eggheadednesses
- egocentricities
- egregiousnesses
- elaboratenesses
- electrification
- electroacoustic
- electroanalyses
- electroanalysis
- electrochemical
- electrodeposits
- electrodialyses
- electrodialysis
- electrodialytic
- electrodynamics
- electrofishings
- electrokinetics
- electromagnetic
- electromyograms
- electromyograph
- electronegative
- electrophoresed
- electrophoreses
- electrophoresis
Starting with F 53
- facetiousnesses
- faithlessnesses
- familiarization
- fanaticalnesses
- fantasticalness
- fantastications
- fashionableness
- fatheadednesses
- faultlessnesses
- favorablenesses
- featherbeddings
- featherstitched
- featherstitches
- federalizations
- feloniousnesses
- fencelessnesses
- ferociousnesses
- ferrimagnetisms
- ferromagnetisms
- ferromanganeses
- fetishistically
- fibrinopeptides
- fictionizations
- filterabilities
- fingerprintings
- fissiparousness
- flibbertigibbet
- flirtatiousness
- floriculturists
- floriferousness
- foolhardinesses
- foreordinations
- foresightedness
- forgetfulnesses
- forgivingnesses
- formidabilities
- formularization
- fortunatenesses
- fortunetellings
- fractionalizing
Starting with G 45
- garrulousnesses
- gastroenteritis
- gastronomically
- gelatinizations
- generalisations
- generalizations
- gentlemanliness
- gentrifications
- geochronologies
- geochronologist
- geohydrologists
- geomagnetically
- geometrizations
- geomorphologies
- geomorphologist
- geostrophically
- geotectonically
- germinabilities
- gewurztraminers
- glamorousnesses
- glucocorticoids
- gluconeogeneses
- gluconeogenesis
- glutaraldehydes
- glyceraldehydes
- gnotobiotically
- governmentalism
- governmentalist
- governmentalize
- gracelessnesses
- grammaticalness
- grandiloquences
- grandiloquently
- grandiosenesses
- grandparenthood
- graphitizations
- gravimetrically
- gravitationally
- greensicknesses
- grotesquenesses
Starting with H 126
- habitablenesses
- halfheartedness
- hallucinogenics
- haphazardnesses
- hardheartedness
- harpsichordists
- hazardousnesses
- headmasterships
- healthfulnesses
- heartbreakingly
- heartlessnesses
- heartsicknesses
- heliometrically
- helminthologies
- hemagglutinated
- hemagglutinates
- hematoporphyrin
- hemochromatoses
- hemochromatosis
- hemodynamically
- hemoflagellates
- hemoglobinurias
- hendecasyllabic
- hendecasyllable
- hermaphroditism
- hermeneutically
- heterochromatic
- heterochromatin
- heterogeneities
- heterogeneously
- heteromorphisms
- heterosexuality
- heterothallisms
- hexachlorethane
- hexachlorophene
- hexosaminidases
- hexylresorcinol
- hilariousnesses
- histochemically
- histopathologic
Starting with I 308
- ichthyosaurians
- identicalnesses
- identifications
- ideographically
- idiomaticnesses
- ignominiousness
- illegalizations
- illiberalnesses
- illimitableness
- illogicalnesses
- illustriousness
- imaginarinesses
- imaginativeness
- imitativenesses
- immaterialities
- immaterializing
- immediatenesses
- immiscibilities
- immobilizations
- immortalization
- immovablenesses
- immunoassayable
- immunoblottings
- immunochemistry
- immunocompetent
- immunodeficient
- immunodiagnoses
- immunodiagnosis
- immunodiffusion
- immunoglobulins
- immunologically
- immunomodulator
- immunopathology
- immunotherapies
- immutablenesses
- impalpabilities
- impassabilities
- impassibilities
- impassivenesses
- impeccabilities
Starting with J 3
- judiciousnesses
- jurisprudential
- juxtapositional
Starting with K 7
- kaffeeklatsches
- keratinizations
- kindergarteners
- kindheartedness
- kinesthetically
- kittenishnesses
- kremlinologists
Starting with L 46
- laboriousnesses
- labyrinthodonts
- lackadaisically
- laryngectomized
- latensification
- lateralizations
- latitudinarians
- laughablenesses
- lecherousnesses
- legislatorships
- legitimizations
- leisurelinesses
- lepidopterology
- leukaemogeneses
- leukaemogenesis
- levelheadedness
- lexicalisations
- lexicalizations
- lexicographical
- liberalizations
- libertarianisms
- lickerishnesses
- lightfastnesses
- lightsomenesses
- lignocelluloses
- lignocellulosic
- lignosulfonates
- limitlessnesses
- literalizations
- litigiousnesses
- liturgiologists
- loathsomenesses
- logarithmically
- logographically
- longsightedness
- lucrativenesses
- ludicrousnesses
- luxuriousnesses
- lymphadenitises
- lymphadenopathy
Starting with M 189
- machinabilities
- macroaggregated
- macroaggregates
- macrocosmically
- macroevolutions
- macrophotograph
- macroscopically
- macrostructural
- macrostructures
- magistratically
- magnanimousness
- magnetoelectric
- maintainability
- majoritarianism
- maladministered
- maladroitnesses
- maldistribution
- maliciousnesses
- malpractitioner
- manageabilities
- maneuverability
- marginalization
- marketabilities
- marriageability
- martensitically
- marvelousnesses
- masculinization
- masochistically
- masterfulnesses
- mastoidectomies
- materfamiliases
- materialization
- mathematization
- meaninglessness
- measurabilities
- mechanistically
- mechanochemical
- mechanoreceptor
- medulloblastoma
- megacorporation
Starting with N 155
- nationalization
- naturalizations
- nearsightedness
- necessitousness
- necromantically
- negligibilities
- negotiabilities
- neocolonialisms
- neocolonialists
- neoconservatism
- neoconservative
- nephrectomizing
- nervelessnesses
- neuroanatomical
- neuroanatomists
- neurobiological
- neurobiologists
- neuroblastomata
- neurofibrillary
- neurohypophyses
- neurohypophysis
- neuropathically
- neuropathologic
- neurophysiology
- neuropsychiatry
- neuropsychology
- neuroscientific
- neuroscientists
- neurosecretions
- neurotoxicities
- neutralizations
- niggardlinesses
- nincompooperies
- nitrocelluloses
- nitroglycerines
- nonachievements
- nonadditivities
- nonagricultural
- nonantagonistic
- nonarchitecture
Starting with O 159
- objectification
- objectivenesses
- obliviousnesses
- obnoxiousnesses
- observabilities
- observationally
- obsessivenesses
- obstinatenesses
- obstructionisms
- obstructionists
- obstructiveness
- obtainabilities
- obtrusivenesses
- occidentalizing
- oceanographical
- odoriferousness
- offensivenesses
- offhandednesses
- officiousnesses
- oligodendrocyte
- oligodendroglia
- oligomerization
- oligonucleotide
- oligosaccharide
- omnicompetences
- omnidirectional
- ontogenetically
- openheartedness
- openmouthedness
- operationalisms
- operationalists
- operativenesses
- ophthalmologies
- ophthalmologist
- ophthalmoscopes
- ophthalmoscopic
- opinionatedness
- opportunenesses
- opprobriousness
- optoelectronics
Starting with P 358
- painterlinesses
- palatablenesses
- palatalizations
- paleobiological
- paleobiologists
- paleoecological
- paleoecologists
- paleogeographic
- paleomagnetisms
- paleomagnetists
- paleontological
- paleontologists
- paleozoological
- paleozoologists
- palynologically
- pantheistically
- pantisocratical
- pantisocratists
- paradoxicalness
- paragenetically
- parajournalisms
- paralinguistics
- parallelepipeds
- parametrization
- paramyxoviruses
- paranormalities
- pararosanilines
- parasexualities
- parasitizations
- parasitological
- parasitologists
- parasympathetic
- parenthetically
- parliamentarian
- parthenocarpies
- parthenogeneses
- parthenogenesis
- parthenogenetic
- participational
- particularising
Starting with Q 11
- quadruplicating
- quadruplication
- quadruplicities
- quantifications
- quarrelsomeness
- quarterfinalist
- quatercentenary
- querulousnesses
- quincentenaries
- quincentennials
- quintuplicating
Starting with R 185
- radicalizations
- radioactivities
- radioautographs
- radioautography
- radiobiological
- radiobiologists
- radiochemically
- radiometrically
- radioprotection
- radioprotective
- radiostrontiums
- radiotelegraphs
- radiotelegraphy
- radiotelemetric
- radiotelephones
- radiotherapists
- rapaciousnesses
- rapturousnesses
- rationalization
- reacclimatizing
- reaccreditation
- reactionaryisms
- reafforestation
- reapportionment
- reappropriating
- reasonabilities
- reauthorization
- recalcitrancies
- recallabilities
- recanalizations
- recapitulations
- receptivenesses
- recertification
- recessivenesses
- rechoreographed
- rechromatograph
- reclusivenesses
- recodifications
- recognizability
- recolonizations
Starting with S 253
- sabermetricians
- sacramentalisms
- sacramentalists
- sacrosanctities
- sadomasochistic
- sagaciousnesses
- salaciousnesses
- sanctifications
- sanctimoniously
- saponaceousness
- saponifications
- saprogenicities
- saprophytically
- schematizations
- schistosomiases
- schistosomiasis
- schlockmeisters
- schoolmasterish
- scintillometers
- sclerotizations
- sculpturesquely
- seaworthinesses
- seclusivenesses
- secondarinesses
- secretivenesses
- secularizations
- securitizations
- sedimentologies
- sedimentologist
- seditiousnesses
- seductivenesses
- segregationists
- selectivenesses
- semiabstraction
- semicentennials
- semicolonialism
- semicrystalline
- semicylindrical
- semidocumentary
- semilogarithmic
Starting with T 122
- tachyarrhythmia
- talkativenesses
- tarsometatarsus
- tastelessnesses
- tatterdemalions
- teachablenesses
- technologically
- technostructure
- telangiectasias
- teleconferenced
- teleconferences
- telegraphically
- telekinetically
- telephotography
- teleprocessings
- teletypewriters
- temerariousness
- temperamentally
- temperatenesses
- tempestuousness
- temporarinesses
- tenaciousnesses
- tendentiousness
- tenderheartedly
- tenosynovitises
- tentativenesses
- teratocarcinoma
- tergiversations
- territorialisms
- territorialists
- territorialized
- territorializes
- tetragrammatons
- tetrahydrofuran
- tetramethyllead
- thalassocracies
- thanklessnesses
- theatricalities
- theatricalizing
- therapeutically
Starting with U 126
- ultimogenitures
- ultracentrifuge
- ultracommercial
- ultraconvenient
- ultrademocratic
- ultrafastidious
- ultrafiltration
- ultraliberalism
- ultramarathoner
- ultramicroscope
- ultramicrotomes
- ultramodernists
- ultramontanisms
- ultraprecisions
- ultrasonography
- ultrastructural
- ultrastructures
- ultravirilities
- unacceptability
- unaccommodating
- unadulteratedly
- unalterableness
- unanswerability
- unanticipatedly
- unappreciations
- unassailability
- unboundednesses
- uncategorizable
- unceremoniously
- uncertainnesses
- unchallengeable
- unchangeability
- unchoreographed
- unchronological
- uncircumcisions
- uncleanlinesses
- unclimbableness
- uncommunicative
- uncompassionate
- uncomplainingly
Starting with V 30
- valetudinarians
- valuelessnesses
- vascularization
- vasoconstrictor
- vasodilatations
- venerablenesses
- ventriloquially
- ventriloquistic
- ventriloquizing
- venturesomeness
- venturousnesses
- veraciousnesses
- verifiabilities
- verisimilitudes
- veritablenesses
- versatilenesses
- vexatiousnesses
- vicariousnesses
- vicissitudinous
- videoconference
- viscoelasticity
- visionarinesses
- vivaciousnesses
- vivisectionists
- voicelessnesses
- volatilizations
- voluntarinesses
- voraciousnesses
- voyeuristically
- vulnerabilities
Starting with W 22
- wappenschawings
- warmheartedness
- warrantableness
- waterlessnesses
- wearisomenesses
- weatherboarding
- weatherizations
- weatherproofing
- weltanschauungs
- westernisations
- westernizations
- whatchamacallit
- whimsicalnesses
- whippersnappers
- whistleblowings
- wholesomenesses
- withdrawnnesses
- woebegonenesses
- wonderfulnesses
- worrisomenesses
- worthlessnesses
- wrongheadedness
Starting with X 2
- xerographically
- xeroradiography
Starting with Z 1
- zoogeographical
This page shows 796 of the 3,190 words; the finder lists all of them and can copy them as text.
What is in this list
This list holds 3,190 words, 1.8% of the 172,634 words this site keeps from the ENABLE word list. Every word here has 15 letters, and they average 15 letters by construction — so the interesting differences are in which letters they use. Of the 14 lists in this group it is the 12th largest: “8 letter words” leads with 28,394 and “2 letter words” has the fewest, 96. 2 words that would also fit were left out by this site's blocklist of slurs and explicit words.
Points and vowels
Using this site's letter values, the average word here scores 23.7 points (median 23); words of the same lengths across the whole list average 23.7, so this list scores the same as the dictionary. The top scorers are OXYPHENBUTAZONE (40), EXTRAJUDICIALLY (39), VENTRILOQUIZING (39), CYCLOHEXYLAMINE (36). Point for point, OXYPHENBUTAZONE earns the most per letter: 40 points over 15 letters, 2.7 each.
Vowels (A, E, I, O, U) make up 39.9% of the letters, against 38% across the whole list. 110 words are more than half vowels.
How the words are built
1,190 words have a doubled letter (37.3%); the most common doubles are SS (738), LL (285), RR (77). The most common three-letter openings are NON- (112, as in NONACHIEVEMENTS), OVE- (97, as in OVERABSTRACTING), INT- (96, as in INTANGIBILITIES). The most common endings are -SES (420, as in ACCEPTINGNESSES), -ONS (295, as in ADMINISTRATIONS), -IES (277, as in ABSORBABILITIES). 48.9% end in a single S — mostly plurals and verb forms of shorter words.
Word play in this list
The biggest anagram family here is ALGORITHMICALLY and LOGARITHMICALLY — 2 words from the same 15 letters. Altogether 10 sets of anagrams sit inside this list, covering 20 words. CHEERLESSNESSES is the longest word here that uses only one kind of vowel, ahead of DEFENSELESSNESS.
14.6% of these words take an S on the end and stay a word (ACANTHOCEPHALAN, ACCLIMATIZATION and ACETOPHENETIDIN among them); after S, the most useful end letter is D, which extends 21 words. At the front, P turns 8 words into new ones (LATITUDINARIANS → PLATITUDINARIANS); A turns one word into a new one (SYMPTOMATICALLY → ASYMPTOMATICALLY); D turns one word into a new one (ENUMERABILITIES → DENUMERABILITIES).
Using this list
To narrow it further, open it in the pattern finder: the rule “has 15 letters” is already filled in, and you can add a length, a fixed letter position or letters to leave out.
More lists like this
- 2 letter words96 words
- 3 letter words967 words
- 4 letter words3,881 words
- 5 letter words8,606 words
- 6 letter words15,206 words
- 7 letter words23,080 words
- 8 letter words28,394 words
- 9 letter words24,863 words
- 10 letter words20,290 words
- 11 letter words15,496 words
- 12 letter words11,348 words
- 13 letter words7,823 words
- All word lists102 lists
About these lists. Words come from ENABLE, a public-domain word list; a few slurs and explicit words are left out. Letter values are this site's own rule, based on how rare each letter is. Scrabble, Words With Friends and Wordle are trademarks of their owners (Hasbro and Mattel, Zynga, The New York Times); this site is not affiliated with or endorsed by any of them. Sources and limits.