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13 Letter Words

A complete list of 13,977 thirteen-letter words, ordered with the most common first. Use the finder to narrow them by the letters you have.

Find 13-letter words from your letters

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Showing only 13-letter words.

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Quick answer

How many 13 letter words are there?

There are 13,977 thirteen-letter words in this dictionary of English. The most common include INTERROGATIVE, NONCONFORMIST, UNDERSTANDING, PERPENDICULAR, SUPERORDINATE, and one of the highest-scoring is SQUEEZABILITY at 36 points.

Total words
13,977
Word length
13 letters
Top score
36 pts
Most common
INTERROGATIVE

Common 13 letter words

Showing the 600 most common of 13,977. Click any word for its definition, score and anagrams.

  • interrogative17
  • nonconformist20
  • understanding16
  • perpendicular20
  • superordinate16
  • schizophrenic34
  • underestimate16
  • concentration17
  • correspondent18
  • counterattack21
  • inconvenience20
  • international13
  • authoritarian16
  • comprehensive25
  • contradictory21
  • demonstrative19
  • establishment20
  • revolutionary19
  • unaccompanied22
  • carboniferous20
  • complementary24
  • consideration16
  • demonstration16
  • determinative19
  • northeastward20
  • northwestward23
  • pneumogastric20
  • quadruplicate27
  • semiautomatic19
  • southeastward20
  • southwestward23
  • supernumerary20
  • communication21
  • corresponding19
  • determination16
  • disappearance20
  • embarrassment19
  • extraordinary24
  • individualism20
  • accompaniment23
  • administrator16
  • agglutination15
  • approximation26
  • certification20
  • configuration19
  • consciousness17
  • consolidation16
  • conspicuously22
  • contemplation19
  • contradiction18
  • decomposition20
  • differentiate20
  • distinguished19
  • effectiveness24
  • encouragement18
  • expansiveness25
  • fractionation18
  • gratification19
  • impressionist17
  • indispensable18
  • insignificant19
  • investigation17
  • justification25
  • manifestation18
  • orchestration18
  • parliamentary20
  • philosophical25
  • preoccupation21
  • proportionate17
  • provincialism22
  • psychological26
  • qualification27
  • significantly22
  • sophisticated21
  • substantially18
  • technological21
  • theoretically21
  • transmutation15
  • uncomfortable22
  • acculturation17
  • agglomeration17
  • amplification22
  • appropriation19
  • authoritative19
  • authorization25
  • automatically20
  • calcification22
  • chrysanthemum28
  • circumference24
  • circumstances21
  • collaboration17
  • commiseration19
  • communicative24
  • complimentary24
  • comprehension22
  • condescension18
  • confrontation18
  • conscientious17
  • constellation15
  • contamination17
  • contemplative22
  • contraceptive22
  • deterioration14
  • discretionary19
  • disengagement18
  • disparagement19
  • dispossession16
  • dissemination16
  • distastefully20
  • electrophorus20
  • enlightenment19
  • environmental18
  • excommunicate28
  • extrapolation22
  • extravagantly27
  • forgetfulness20
  • fortification21
  • fragmentation19
  • hallucination18
  • heterogeneous17
  • inappropriate19
  • incorporation17
  • independently20
  • indeterminate16
  • individualist18
  • individuality21
  • inexhaustible25
  • institutional13
  • insubstantial15
  • intermarriage16
  • interposition15
  • interrogation14
  • jurisprudence25
  • juxtaposition29
  • knowledgeable24
  • magnification21
  • magnificently24
  • mediterranean16
  • miscellaneous17
  • modernization25
  • mortification20
  • nationalistic15
  • neighbourhood23
  • nonfunctional18
  • objectionable26
  • participation19
  • philanthropic25
  • physiological24
  • potentiometer17
  • preconception21
  • predomination18
  • procrastinate17
  • proliferation18
  • psychotherapy31
  • questioningly26
  • refrigeration17
  • reinforcement20
  • religiousness14
  • reorientation13
  • retentiveness16
  • retrospective20
  • reverberation18
  • revolutionize25
  • sequestration22
  • specification22
  • spontaneously18
  • stabilization24
  • strangulation14
  • supplementary22
  • thoroughgoing22
  • transcription17
  • transgression14
  • transmissible17
  • transpiration15
  • unaccountable19
  • unambiguously21
  • unconditional16
  • unconquerable26
  • uncooperative20
  • unimaginative19
  • unimpeachable24
  • uninterrupted16
  • unnecessarily18
  • unpredictable20
  • unpretentious15
  • unselfishness19
  • unsympathetic25
  • vulnerability21
  • waterproofing22
  • worthlessness19
  • abortifacient20
  • accessibility22
  • accommodating23
  • accommodation22
  • accommodative25
  • agglutinative18
  • agreeableness16
  • animalization24
  • anthelminthic23
  • antibacterial17
  • anticlimactic21
  • anticlockwise24
  • antimicrobial19
  • argumentation16
  • aspergillosis16
  • assassination13
  • attentiveness16
  • audaciousness16
  • authorisation16
  • autochthonous21
  • baccalaureate19
  • backscratcher28
  • beatification20
  • biotechnology24
  • blastogenesis16
  • bombastically24
  • brutalisation15
  • brutalization24
  • callisthenics20
  • capaciousness19
  • cartilaginous16
  • chateaubriand21
  • clarification20
  • collectivised21
  • collectivized30
  • combinatorial19
  • commemoration21
  • commemorative24
  • commercialize30
  • communisation19
  • communization28
  • commutability24
  • compassionate19
  • compatibility24
  • concatenation17
  • confabulation20
  • confectionery23
  • confederation19
  • connectedness18
  • consolidative19
  • contaminating18
  • countercharge21
  • counterweight22
  • crossbreeding19
  • decarboxylate28
  • decompression20
  • deferentially20
  • deforestation17
  • descriptivism23
  • desirableness16
  • discoloration16
  • disconfirming22
  • disconnection18
  • discontinuous16
  • disfiguration18
  • disfigurement20
  • disrespectful21
  • dissimilation16
  • documentation18
  • domestication18
  • dramatisation16
  • dramatization25
  • dysfunctional22
  • eccentrically22
  • effervescence26
  • efflorescence23
  • elaborateness15
  • electrocution17
  • embellishment22
  • encapsulation17
  • encephalogram23
  • exhibitionism27
  • exhibitionist25
  • expectoration24
  • expostulation22
  • expressionist22
  • extermination22
  • extravasation23
  • falsification21
  • featherweight26
  • fertilisation16
  • fertilization25
  • foreshadowing24
  • fossilisation16
  • fossilization25
  • fruitlessness16
  • functionalism20
  • galvanisation17
  • galvanization26
  • geometrically21
  • glorification19
  • gracelessness16
  • grandiloquent24
  • hairsplitting19
  • harmonisation18
  • harmonization27
  • hermaphrodite24
  • housecleaning19
  • hundredweight25
  • hypertonicity26
  • hypochondriac29
  • immateriality20
  • immediateness18
  • impeccability26
  • impermissible21
  • impersonation17
  • impossibility22
  • improvisation20
  • incandescence20
  • incapableness19
  • inconsequence26
  • inconsiderate16
  • inconsistency20
  • incontestable17
  • inconvertible20
  • incorrectness17
  • indiscernible18
  • indisposition16
  • individualise18
  • individualize27
  • individuation18
  • industrialise14
  • industrialize23
  • inexpensively28
  • infinitesimal18
  • inflexibility28
  • inflorescence20
  • ingeniousness14
  • ingenuousness14
  • inquisitorial22
  • insensibility18
  • insidiousness14
  • insubordinate16
  • insufficiency26
  • interbreeding17
  • interpolation15
  • interrogatory17
  • invariability21
  • judiciousness23
  • justificative28
  • justificatory28
  • lackadaisical22
  • lamellibranch22
  • leatherjacket29
  • lightsomeness19
  • machiavellian23
  • magisterially19
  • magnetisation16
  • magnetization25
  • materialistic17
  • mechanisation20
  • mechanization29
  • mercilessness17
  • metamorphosis22
  • metrification20
  • microscopical23
  • mollification20
  • monochromatic24
  • morphological23
  • mummification24
  • murderousness16
  • mystification23
  • neoclassicist17
  • nitrification18
  • nonconformism22
  • nonconformity23
  • nonmechanical22
  • northeasterly19
  • northwesterly22
  • nullification18
  • occidentalism20
  • onomatopoetic19
  • ornamentation15
  • orthogonality20
  • overabundance21
  • overvaluation19
  • palatableness17
  • parenthetical20
  • pauperization26
  • penuriousness15
  • perambulation19
  • perseveration18
  • perspicacious21
  • platyrrhinian21
  • polychromatic27
  • ponderousness16
  • precipitation19
  • precipitously22
  • prefiguration19
  • premeditation18
  • preponderance20
  • prepossession17
  • preternatural15
  • prevarication20
  • probabilistic21
  • problematical21
  • prognosticate18
  • promiscuously22
  • pronunciation17
  • psychogenesis24
  • psychogenetic26
  • pulverisation18
  • pulverization27
  • quadrilateral23
  • quadrillionth26
  • quincentenary27
  • quintillionth25
  • rapaciousness17
  • ratiocination15
  • reciprocation19
  • reciprocative22
  • reciprocatory22
  • recombination19
  • reconditeness16
  • rectification20
  • reduplication18
  • reexamination22
  • reflexiveness26
  • regurgitation15
  • reincarnation15
  • reinstatement15
  • relinquishing26
  • republication19
  • retroflection18
  • retrogression14
  • retrospection17
  • revolutionise16
  • sagaciousness16
  • scholasticism22
  • scintillating16
  • scintillation15
  • secretiveness18
  • semiconductor20
  • sensitisation13
  • sensitiveness16
  • sensitization22
  • shapelessness18
  • sheepshearing22
  • socialisation15
  • socialization24
  • sorrowfulness19
  • southeasterly19
  • southwesterly22
  • spasmodically23
  • spindleshanks23
  • squeamishness27
  • stabilisation15
  • steadfastness17
  • sterilisation13
  • sterilization22
  • strengthening18
  • structuralism17
  • subordination16
  • subsidisation16
  • subsidization25
  • substitutable17
  • subterraneous15
  • sumptuousness17
  • superannuated16
  • superposition17
  • surreptitious15
  • swashbuckling28
  • symbolisation20
  • symbolization29
  • synchronizing31
  • tastelessness13
  • temperamental19
  • temperateness17
  • tenderhearted18
  • terpsichorean20
  • terrestrially16
  • terrorisation13
  • terrorization22
  • theanthropism23
  • theologically22
  • thermoplastic22
  • thoughtlessly23
  • tortoiseshell16
  • transactinide16
  • transcendence18
  • transcendency21
  • transferrable18
  • transgendered16
  • translocation15
  • transparently18
  • transposition15
  • triangulation14
  • unadulterated15
  • unappreciated20
  • unarticulated16
  • unceremonious17
  • uncomplicated22
  • unconditioned17
  • uncoordinated17
  • underexposure23
  • undisciplined19
  • unenlightened18
  • unfashionable21
  • uninquisitive25
  • unintentional13
  • uninteresting14
  • unknowingness21
  • unmentionable17
  • unoriginality17
  • unquestioning23
  • unserviceable20
  • unsymmetrical22
  • verbalisation18
  • verbalization27
  • vermiculation20
  • versification21
  • victimization29
  • vitrification21
  • voicelessness18
  • voraciousness18
  • vulgarisation17
  • vulgarization26
  • woolgathering21
  • accreditation18
  • advertisement19
  • aggravatingly22
  • algebraically21
  • alternatively19
  • applicability24
  • appropriately22
  • approximately29
  • archaeologist19
  • archeological21
  • architectural20
  • argumentative19
  • ascertainable17
  • assertiveness16
  • astonishingly20
  • belligerently19
  • bewilderingly23
  • birefringence21
  • boardinghouse20
  • bronchiolitis20
  • calculatingly21
  • catecholamine22
  • choreographic26
  • commercialism23
  • communicating22
  • companionship24
  • comparatively25
  • competitively25
  • conceptuality22
  • condescending20
  • congressional16
  • considerately19
  • consternation15
  • contraception19
  • controversial18
  • corticotropin19
  • craftsmanship25
  • deformational19
  • demythologize32
  • depersonalize25
  • developmental21
  • dexamethasone26
  • diagnostician17
  • dialectically21
  • diametrically21
  • disappointing19
  • disconcerting19
  • discontinuity19
  • disheartening18
  • disinterested15
  • dispassionate16
  • distinctively22
  • electromagnet18
  • electrostatic17
  • emphysematous25
  • encouragingly20
  • energetically19
  • entertainment15
  • everlastingly20
  • exceptionally27
  • exclusiveness25
  • fasciculation20
  • fascinatingly22
  • ferromagnetic21
  • foreknowledge25
  • fundamentally22
  • gastrocnemius18
  • gesticulating17
  • grammatically23
  • gravitational17
  • gubernatorial16
  • herpetologist19
  • homogeneously22
  • housebreaking23
  • hyalinization28
  • hydrochloride26
  • hypertrophied27
  • hypervelocity29
  • idiosyncratic21
  • imaginatively22
  • imperceptibly26
  • inadvertently20

Highest-scoring 13 letter words

The thirteen-letter words worth the most in Scrabble, before premium squares and before the 50-point bingo bonus for using all seven tiles.

WordScrabbleWords With Friends
RAZZAMATAZZES5152
CHIQUICHIQUIS4143
EMBEZZLEMENTS3742
KATZENJAMMERS3742
OBJECTIVIZING3744
SUBJECTIVIZED3743
SQUEEZABILITY3638
BEDAZZLEMENTS3640
BENZIMIDAZOLE3640
HYPOPHARYNXES3635
PHOTOOXIDIZED3636
QUELQUECHOSES3639
SCHIZOMYCETIC3638
SUBJECTIVIZES3642
TACHYPHYLAXES3635

13 letter words starting with each letter

The most common thirteen-letter words for every starting letter, with how many there are.

13 letter words starting with A

864 words

  • authoritarian16
  • accompaniment23
  • administrator16
  • agglutination15
  • approximation26
  • acculturation17
  • agglomeration17
  • amplification22

13 letter words starting with B

387 words

  • baccalaureate19
  • backscratcher28
  • beatification20
  • biotechnology24
  • blastogenesis16
  • bombastically24
  • brutalisation15
  • brutalization24

13 letter words starting with C

1,420 words

  • concentration17
  • correspondent18
  • counterattack21
  • comprehensive25
  • contradictory21
  • carboniferous20
  • complementary24
  • consideration16

13 letter words starting with D

1,011 words

  • demonstrative19
  • demonstration16
  • determinative19
  • determination16
  • disappearance20
  • decomposition20
  • differentiate20
  • distinguished19

13 letter words starting with E

655 words

  • establishment20
  • embarrassment19
  • extraordinary24
  • effectiveness24
  • encouragement18
  • expansiveness25
  • electrophorus20
  • enlightenment19

13 letter words starting with F

356 words

  • fractionation18
  • forgetfulness20
  • fortification21
  • fragmentation19
  • falsification21
  • featherweight26
  • fertilisation16
  • fertilization25

13 letter words starting with G

305 words

  • gratification19
  • galvanisation17
  • galvanization26
  • geometrically21
  • glorification19
  • gracelessness16
  • grandiloquent24
  • gastrocnemius18

13 letter words starting with H

564 words

  • hallucination18
  • heterogeneous17
  • hairsplitting19
  • harmonisation18
  • harmonization27
  • hermaphrodite24
  • housecleaning19
  • hundredweight25

13 letter words starting with I

926 words

  • interrogative17
  • inconvenience20
  • international13
  • individualism20
  • impressionist17
  • indispensable18
  • insignificant19
  • investigation17

13 letter words starting with J

32 words

  • justification25
  • jurisprudence25
  • juxtaposition29
  • judiciousness23
  • justificative28
  • justificatory28
  • jollification25
  • jabberwockies33

13 letter words starting with K

47 words

  • knowledgeable24
  • kaleidoscopic24
  • kindergartner19
  • kaffeeklatsch32
  • kaleidophones23
  • kaleidoscopes22
  • kapellmeister21
  • karyomappings27

13 letter words starting with L

223 words

  • lackadaisical22
  • lamellibranch22
  • leatherjacket29
  • lightsomeness19
  • laboriousness15
  • labyrinthitis21
  • lactobacillus19
  • laughingstock24

13 letter words starting with M

844 words

  • manifestation18
  • magnification21
  • magnificently24
  • mediterranean16
  • miscellaneous17
  • modernization25
  • mortification20
  • machiavellian23

13 letter words starting with N

444 words

  • nonconformist20
  • northeastward20
  • northwestward23
  • nationalistic15
  • neighbourhood23
  • nonfunctional18
  • neoclassicist17
  • nitrification18

13 letter words starting with O

475 words

  • orchestration18
  • objectionable26
  • occidentalism20
  • onomatopoetic19
  • ornamentation15
  • orthogonality20
  • overabundance21
  • overvaluation19

13 letter words starting with P

1,528 words

  • perpendicular20
  • pneumogastric20
  • parliamentary20
  • philosophical25
  • preoccupation21
  • proportionate17
  • provincialism22
  • psychological26

13 letter words starting with Q

86 words

  • quadruplicate27
  • qualification27
  • questioningly26
  • quadrilateral23
  • quadrillionth26
  • quincentenary27
  • quintillionth25
  • qualitatively28

13 letter words starting with R

729 words

  • revolutionary19
  • refrigeration17
  • reinforcement20
  • religiousness14
  • reorientation13
  • retentiveness16
  • retrospective20
  • reverberation18

13 letter words starting with S

1,415 words

  • superordinate16
  • schizophrenic34
  • semiautomatic19
  • southeastward20
  • southwestward23
  • supernumerary20
  • significantly22
  • sophisticated21

13 letter words starting with T

635 words

  • technological21
  • theoretically21
  • transmutation15
  • thoroughgoing22
  • transcription17
  • transgression14
  • transmissible17
  • transpiration15

13 letter words starting with U

642 words

  • understanding16
  • underestimate16
  • unaccompanied22
  • uncomfortable22
  • unaccountable19
  • unambiguously21
  • unconditional16
  • unconquerable26

13 letter words starting with V

218 words

  • vulnerability21
  • verbalisation18
  • verbalization27
  • vermiculation20
  • versification21
  • victimization29
  • vitrification21
  • voicelessness18

13 letter words starting with W

118 words

  • waterproofing22
  • worthlessness19
  • woolgathering21
  • watercolorist18
  • wonderfulness20
  • waterlessness16
  • weatherliness19
  • weightlifting24

13 letter words starting with X

18 words

  • xerophthalmia30
  • xanthochroias28
  • xanthochroids29
  • xanthochroism30
  • xanthochromia30
  • xanthochroous28
  • xanthopterine25
  • xanthopterins25

13 letter words starting with Y

8 words

  • yachtsmanship28
  • yellowhammers26
  • yellowishness22
  • yellowthroats22
  • yesterevening20
  • yestermorning19
  • yieldableness19
  • yuppification25

13 letter words starting with Z

27 words

  • zinjanthropus34
  • zalambdodonts28
  • zantedeschias28
  • zealousnesses22
  • zestfulnesses25
  • zeugmatically30
  • zigzaggedness35
  • zincification29

Common endings for 13 letter words

The 3-letter endings shared by the most thirteen-letter words. Spotting an ending in your rack is the fastest route to a long play.

13 letter words ending in ING

1,125 words

  • understanding16
  • corresponding19
  • thoroughgoing22
  • waterproofing22
  • accommodating23
  • contaminating18
  • crossbreeding19
  • disconfirming22
  • foreshadowing24
  • hairsplitting19

13 letter words ending in SES

938 words

  • abusivenesses18
  • acidophiluses21
  • actinomycoses22
  • adaptednesses17
  • adventuresses17
  • adverbialises19
  • adversenesses17
  • advisednesses18
  • aestheticises18
  • agelessnesses14

13 letter words ending in IES

883 words

  • abnormalities17
  • acceptivities22
  • accountancies19
  • actinometries17
  • adorabilities16
  • aerobiologies16
  • affectivities24
  • agamospermies20
  • agrobiologies17
  • agrostologies15

13 letter words ending in ONS

726 words

  • abbreviations20
  • accelerations17
  • accentuations17
  • accumulations19
  • adjudications24
  • adulterations14
  • aerifications18
  • aeroplanktons19
  • agathodaimons20
  • aldolisations14

13 letter words ending in ION

724 words

  • concentration17
  • consideration16
  • demonstration16
  • communication21
  • determination16
  • agglutination15
  • approximation26
  • certification20
  • configuration19
  • consolidation16

Thirteen-letter words with Q, Z, X and J

The high-value tiles. A thirteen-letter word that uses one is usually the top-scoring play on the rack.

13 letter words with Q

293 words

  • quadruplicate27
  • qualification27
  • questioningly26
  • sequestration22
  • unconquerable26
  • grandiloquent24
  • inconsequence26
  • inquisitorial22
  • quadrilateral23
  • quadrillionth26

13 letter words with Z

903 words

  • schizophrenic34
  • authorization25
  • modernization25
  • revolutionize25
  • stabilization24
  • animalization24
  • brutalization24
  • collectivized30
  • commercialize30
  • communization28

13 letter words with X

481 words

  • extraordinary24
  • approximation26
  • expansiveness25
  • excommunicate28
  • extrapolation22
  • extravagantly27
  • inexhaustible25
  • juxtaposition29
  • decarboxylate28
  • exhibitionism27

13 letter words with J

122 words

  • justification25
  • jurisprudence25
  • juxtaposition29
  • objectionable26
  • judiciousness23
  • justificative28
  • justificatory28
  • leatherjacket29
  • conjecturally27
  • enjoyableness25

Why thirteen-letter words matter

Words of this length are where the big scores live. Playing all seven tiles from your rack in one turn earns a 50-point bingo bonus in Scrabble, so recognising thirteen-letter patterns from a jumbled rack is worth more than any single high-value tile.

The list above is ranked by how common each word is in written English rather than alphabetically, using corpus frequency data. That means the words most likely to be accepted without an argument, and most likely to be useful, appear first.

Finding thirteen-letter words from your own letters

Browsing a full list is useful for study, but during a game you need the intersection of the list and your rack. Enter your tiles into the finder above and set the length to 13; the results are every thirteen-letter word your letters can actually build, ordered by points. Add a starting or ending letter if you are playing off a tile already on the board.

Other word lengths

Frequently asked questions

How many 13 letter words are there?

This dictionary contains 13,977 thirteen-letter words. That figure includes inflected forms such as plurals and past tenses, which are valid in most word games.

What is the highest-scoring 13 letter word?

Among 13-letter words, SQUEEZABILITY is one of the highest scoring at 36 points in Scrabble. High-value 13-letter words almost always contain Q, Z, X or J.

What are some common 13 letter words?

Some of the most familiar thirteen-letter words are INTERROGATIVE, NONCONFORMIST, UNDERSTANDING, PERPENDICULAR, SUPERORDINATE, SCHIZOPHRENIC, UNDERESTIMATE, CONCENTRATION. The list above is ordered by how common each word is, so the most recognisable ones appear first.

Are all 13 letter words valid in Scrabble?

Most are, but tournament play uses an official regional word list that differs slightly from a general English dictionary. For casual games this list works well; for sanctioned play, check the official dictionary for your region.