15-letter words ending in Y

15-letter words ending in Y number 710, from familiar -ly adverbs to rare technical terms.

710 wordsTop pick INTERNATIONALLYHighest score PHOTOXYLOGRAPHY 39

8 of 710 are everyday words (1%). Mostly rare words: great for Scrabble, tough for daily puzzles.

Letter
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

S ends the most 15-letter words (3,428); P ends the fewest (14). Y ranks #2 of 26. The bar under each letter shows the size of its list.

Length
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Best words to play first 710 · most-used first

INTERNATIONALLY₁₈
CONFIDENTIALITY₂₄
ENVIRONMENTALLY₂₃
EXTRAORDINARILY₂₆
PSYCHOLOGICALLY₃₁
UNINTENTIONALLY₁₈
UNCONDITIONALLY₂₁
TECHNOLOGICALLY₂₆
INAPPROPRIATELY₂₄
COMPREHENSIVELY₃₀
CHRONOLOGICALLY₂₆
INSTANTANEOUSLY₁₈
INTERCHANGEABLY₂₆
RETROSPECTIVELY₂₅
PHILOSOPHICALLY₃₀
CONTROVERSIALLY₂₃
CORRESPONDINGLY₂₄
INCOMPATIBILITY₂₆
DEVELOPMENTALLY₂₆
SURREPTITIOUSLY₂₀
COLLABORATIVELY₂₅
PATHOPHYSIOLOGY₃₂
PROPORTIONALITY₂₂
PROPORTIONATELY₂₂
MANEUVERABILITY₂₅
PLENIPOTENTIARY₂₂
ARCHITECTURALLY₂₅
PHYSIOLOGICALLY₂₉
CRYSTALLOGRAPHY₂₉
BIOAVAILABILITY₂₅
COMPUTATIONALLY₂₄
UNCEREMONIOUSLY₂₂
HETEROSEXUALITY₂₈
SYMPATHETICALLY₃₀
MORPHOLOGICALLY₂₈
CARDIOPULMONARY₂₅
DISAPPOINTINGLY₂₄
PSYCHOPATHOLOGY₃₄
REPRODUCIBILITY₂₅
INSTITUTIONALLY₁₈
DEMOGRAPHICALLY₂₉
CONSCIENTIOUSLY₂₂
NEUROPSYCHOLOGY₂₉
STEREOTYPICALLY₂₅
UNREALISTICALLY₂₀
COMPLEMENTARITY₂₆
INTELLIGIBILITY₂₁
AUTHORITATIVELY₂₄

Showing the top 48 of 710 words. See every valid word

All valid words 710

A to Z. Includes rare and Collins-only words. Linked tiles open the word's meaning, score and rhymes.

ABIOGENETICALLY₂₃
ACCOMMODATINGLY₂₈
ACIDIMETRICALLY₂₅
ACKNOWLEDGEABLY₃₁
ACTINOCHEMISTRY₂₇
AERODYNAMICALLY₂₆
AGGLUTINABILITY₂₂
ALGORITHMICALLY₂₆
ALLOTETRAPLOIDY₂₁
ANACOLUTHICALLY₂₅
ANACREONTICALLY₂₂
ANAESTHESIOLOGY₂₂
ANAESTHETICALLY₂₃
ANIMATRONICALLY₂₂
ANISOTROPICALLY₂₂
ANOMALISTICALLY₂₂
ANTHROPOBIOLOGY₂₆
ANTICHRISTIANLY₂₃
ANTIPORNOGRAPHY₂₆
ANTIRATIONALITY₁₈
APOCALYPTICALLY₂₉
APPROACHABILITY₂₉
ARCHEOASTRONOMY₂₅
ARCHEOLOGICALLY₂₆
ARCHIEPISCOPACY₃₁
ARCHITECTURALLY₂₅
ARGUMENTATIVELY₂₄
ASTRONAUTICALLY₂₀
ASTROPHYSICALLY₂₈
ATMOSPHERICALLY₂₇
AUDIOMETRICALLY₂₃
AUTHORITATIVELY₂₄
AUTOCHTHONOUSLY₂₆
AUTOGRAPHICALLY₂₆
AUTOMORPHICALLY₂₇
AUTORADIOGRAPHY₂₅
AUTOTETRAPLOIDY₂₁
AUTOTROPHICALLY₂₅
BATHOMETRICALLY₂₇
BATHYMETRICALLY₃₀
BIDIRECTIONALLY₂₃
BIOAVAILABILITY₂₅
BIOECOLOGICALLY₂₅
BIOGEOCHEMISTRY₂₈
BIOMECHANICALLY₂₉
BIORHYTHMICALLY₃₃
BIOSTRATIGRAPHY₂₆
BISYMMETRICALLY₂₉
BLOODCURDLINGLY₂₅
BROKENHEARTEDLY₂₈
CARCINOGENICITY₂₅
CARDIOPULMONARY₂₅
CATACLYSMICALLY₂₉
CATALLACTICALLY₂₄
CATECHISTICALLY₂₇
CENOGENETICALLY₂₃
CHARISMATICALLY₂₇
CHEMOAUTOTROPHY₃₀
CHEMOPSYCHIATRY₃₅
CHEMOTACTICALLY₂₉
CHEMOTROPICALLY₂₉
CHOLANGIOGRAPHY₃₀
CHOLECYSTECTOMY₃₂
CHOLECYSTOSTOMY₃₀
CHOLINERGICALLY₂₆
CHRONOLOGICALLY₂₆
CINEANGIOGRAPHY₂₇
CINEMICROGRAPHY₃₀
CIRCUMAMBIENTLY₂₈
CLEISTOGAMOUSLY₂₃
CLIMACTERICALLY₂₆
COEDUCATIONALLY₂₃
COENZYMATICALLY₃₆
COINSTANTANEITY₂₀
COLLABORATIVELY₂₅
COLPOSCOPICALLY₂₈
COMBINATORIALLY₂₄
COMMEMORATIVELY₂₉
COMMISERATINGLY₂₅
COMMISERATIVELY₂₇
COMMUNICABILITY₂₈
COMMUNICATIVELY₂₉
COMMUNISTICALLY₂₆
COMPARTMENTALLY₂₆
COMPASSIONATELY₂₄
COMPLEMENTARILY₂₆
COMPLEMENTARITY₂₆
COMPLIMENTARILY₂₆
COMPOSITIONALLY₂₄
COMPREHENSIVELY₃₀
COMPRESSIBILITY₂₆
COMPUTATIONALLY₂₄
CONCENTRATIVELY₂₅
CONDESCENDINGLY₂₅
CONFIDENTIALITY₂₄
CONFIGURABILITY₂₆
CONGRESSIONALLY₂₁
CONJUGATIONALLY₂₈
CONJUNCTIONALLY₂₉
CONSCIENTIOUSLY₂₂
CONSENTANEOUSLY₂₀
CONSEQUENTIALLY₂₉
CONSIDERATIVELY₂₄
CONTEMPLATIVELY₂₇
CONTEMPORANEITY₂₄
CONTEMPTIBILITY₂₆
CONTRACTABILITY₂₄
CONTRACTIBILITY₂₄
CONTRADICTIVELY₂₆
CONTRADICTORILY₂₃
CONTROLLABILITY₂₂
CONTROVERSIALLY₂₃
CONVENTIONALITY₂₃
CORRESPONDENTLY₂₃
CORRESPONDINGLY₂₄
CORROBORATIVELY₂₅
COULOMETRICALLY₂₄
COUNTERACTIVELY₂₅
COUNTERSTRATEGY₂₁
COUNTERTENDENCY₂₃
CRANIOLOGICALLY₂₃
CRYSTALLOGRAPHY₂₉
CUSTOMIZABILITY₃₃
CYTOGENETICALLY₂₆
CYTOPLASMICALLY₂₉
DECIPHERABILITY₂₈
DECOMPOSABILITY₂₇
DEMERITORIOUSLY₂₁
DEMOGRAPHICALLY₂₉
DEMONSTRABILITY₂₃
DEMONSTRATIVELY₂₄
DESTRUCTIBILITY₂₃
DETERMINABILITY₂₃
DETERMINATIVELY₂₄
DEVELOPMENTALLY₂₆
DIAMAGNETICALLY₂₄
DIASTROPHICALLY₂₆
DIFFRANGIBILITY₂₈
DISAGREEABILITY₂₂
DISAPPOINTINGLY₂₄
DISCOMMODIOUSLY₂₆
DISCONCERTINGLY₂₄
DISCONTINUOUSLY₂₁
DISCRETIONARILY₂₁
DISENCHANTINGLY₂₅
DISHARMONIOUSLY₂₄
DISHEARTENINGLY₂₃
DISINFLATIONARY₂₂
DISINTERESTEDLY₂₀
DISPASSIONATELY₂₁
DISQUISITIONARY₂₈
DISREPUTABILITY₂₃
DISRESPECTFULLY₂₆
DISSATISFACTORY₂₄
DISTINGUISHABLY₂₅
DISTRACTIBILITY₂₃
DITHYRAMBICALLY₃₁
DORSIVENTRALITY₂₂
DORSOVENTRALITY₂₂
DRAMATURGICALLY₂₄
DYSLOGISTICALLY₂₅
ECONOMETRICALLY₂₄
ECTOGENETICALLY₂₃
ELECTROACTIVITY₂₅
ELECTRORHEOLOGY₂₄
ELECTROVALENTLY₂₃
EMBRYOLOGICALLY₂₈
ENCEPHALOGRAPHY₃₁
ENCOMIASTICALLY₂₄
ENDOTHERMICALLY₂₆
ENTOMOLOGICALLY₂₃
ENVIRONMENTALLY₂₃
EPEIROGENICALLY₂₃
EPIPHENOMENALLY₂₇
EQUIPROBABILITY₃₃
ETHNOCENTRICITY₂₅
ETHNOMUSICOLOGY₂₆
EUDIOMETRICALLY₂₃
EUPHEMISTICALLY₂₇
EXCHANGEABILITY₃₃
EXCOMMUNICATORY₃₃
EXPOSTULATINGLY₂₈
EXTEROCEPTIVITY₃₂
EXTERRITORIALLY₂₅
EXTRACELLULARLY₂₇
EXTRAJUDICIALLY₃₅
EXTRAORDINARILY₂₆
FETISHISTICALLY₂₆
FIDEICOMMISSARY₂₈
FORMALISTICALLY₂₅
FUNGISTATICALLY₂₄
GAMOGENETICALLY₂₄
GASTRONOMICALLY₂₃
GEOMAGNETICALLY₂₄
GEOSTROPHICALLY₂₆
GEOTECTONICALLY₂₃
GNOTOBIOTICALLY₂₃
GONIOMETRICALLY₂₃
GRAMOPHONICALLY₂₈
GRANDILOQUENTLY₂₉
GRAVIMETRICALLY₂₆
GRAVITATIONALLY₂₂
GYNECOLOGICALLY₂₇
HARMONISTICALLY₂₅
HEARTBREAKINGLY₂₈
HELIOCENTRICITY₂₅
HELIOMETRICALLY₂₅
HELIOTROPICALLY₂₅
HEMISPHERECTOMY₃₂
HEMISPHERICALLY₃₀
HEMODYNAMICALLY₃₁
HERMENEUTICALLY₂₅
HETEROCERCALITY₂₅
HETEROGENEOUSLY₂₂
HETEROSEXUALITY₂₈
HETEROSOCIALITY₂₃
HISTOCHEMICALLY₃₀
HISTOPHYSIOLOGY₃₀
HOLOBLASTICALLY₂₅
HOLOGRAPHICALLY₂₉
HOMEOPATHICALLY₃₀
HOMOCENTRICALLY₂₇
HOMOPLASTICALLY₂₇
HORTICULTURALLY₂₃
HYDROMETALLURGY₂₈
HYDROMETRICALLY₂₉
HYDROPATHICALLY₃₂
HYDROSTATICALLY₂₇
HYDROTROPICALLY₂₉
HYGROMETRICALLY₂₉
HYGROSCOPICALLY₃₁
HYLOZOISTICALLY₃₅
HYPERCRITICALLY₃₀
HYPEREFFICIENCY₃₆
HYPERENDEMICITY₃₁
HYPERFEMININITY₃₁
HYPERMUTABILITY₃₀
HYPERPHYSICALLY₃₆
HYPERREACTIVITY₃₁
HYPNOTISABILITY₂₈
HYPNOTIZABILITY₃₇
HYPSOMETRICALLY₃₀
IDEOGRAPHICALLY₂₇
IDIOMORPHICALLY₂₈
IMMEASURABILITY₂₄
IMMENSURABILITY₂₄
IMMUNOCHEMISTRY₂₉
IMMUNOGENICALLY₂₅
IMMUNOLOGICALLY₂₅
IMMUNOPATHOLOGY₂₈
IMPENETRABILITY₂₄
IMPERISHABILITY₂₇
IMPONDERABILITY₂₅
IMPRESCRIPTIBLY₂₈
INACCESSIBILITY₂₄
INADMISSIBILITY₂₃
INAPPLICABILITY₂₆
INAPPROPRIATELY₂₄
INCALCULABILITY₂₄
INCOMMENSURABLY₂₆
INCOMMUTABILITY₂₆
INCOMPARABILITY₂₆
INCOMPATIBILITY₂₆
INCOMPUTABILITY₂₆
INCONSECUTIVELY₂₅
INCONSIDERATELY₂₁
INCONSOLABILITY₂₂
INCONSPICUOUSLY₂₄
INCORRIGIBILITY₂₃
INDEFEASIBILITY₂₄
INDEFECTIBILITY₂₆
INDEFENSIBILITY₂₄
INDETERMINATELY₂₁
INDIGESTABILITY₂₂
INDIGESTIBILITY₂₂
INDISCRETIONARY₂₁
INDISPUTABILITY₂₃
INDISSOLUBILITY₂₁
INDISTINCTIVELY₂₄
INEFFACEABILITY₂₈
INEFFICACIOUSLY₂₈
INERADICABILITY₂₃
INEXPLICABILITY₃₁
INEXPUGNABILITY₃₀
INEXTENSIBILITY₂₇
INEXTRICABILITY₂₉
INFINITESIMALLY₂₃
INFORMATIONALLY₂₃
INQUISITORIALLY₂₇
INSIGNIFICANTLY₂₄
INSPIRATIONALLY₂₀
INSTANTANEOUSLY₁₈
INSTITUTIONALLY₁₈
INSTRUMENTALITY₂₀
INSUBORDINATELY₂₁
INSUBSTANTIALLY₂₀
INSURRECTIONARY₂₀
INTELLECTUALITY₂₀
INTELLIGIBILITY₂₁
INTERCHANGEABLY₂₆
INTERCOLONIALLY₂₀
INTERCULTURALLY₂₀
INTERDEPENDENCY₂₄
INTERFRATERNITY₂₁
INTERJACULATORY₂₇
INTERJECTIONARY₂₇
INTERLOCUTORILY₂₀
INTERMINABILITY₂₂
INTERNATIONALLY₁₈
INTERPERSONALLY₂₀
INTERROGATINGLY₂₀
INTERROGATIVELY₂₂
INTERROGATORILY₁₉
INTERTEXTUALITY₂₅
INTERTWISTINGLY₂₂
INTERUNIVERSITY₂₁
INTERVISIBILITY₂₃
INTRACELLULARLY₂₀
INTRACEREBRALLY₂₂
INTRADERMICALLY₂₃
INTRAMUSCULARLY₂₂
INTRANSIGEANTLY₁₉
INTRAVASCULARLY₂₃
INTROSPECTIVELY₂₅
INVULNERABILITY₂₃
IONOSPHERICALLY₂₅
IRREDEEMABILITY₂₃
IRREDUCTIBILITY₂₃
IRREFORMABILITY₂₅
IRREFRAGABILITY₂₄
IRREMISSIBILITY₂₂
IRREPEALABILITY₂₂
IRREPREHENSIBLY₂₅
IRRESISTABILITY₂₀
IRRESISTIBILITY₂₀
IRRESOLVABILITY₂₃
IRREVERSIBILITY₂₃
KENOGENETICALLY₂₅
KINESTHETICALLY₂₇
KNOWLEDGABILITY₂₉
LABYRINTHICALLY₂₈
LACKADAISICALLY₂₇
LEPIDOPTEROLOGY₂₄
LEXICOLOGICALLY₃₀
LOGARITHMICALLY₂₆
LOGOGRAPHICALLY₂₇
LYMPHADENOPATHY₃₄
MACROCOSMICALLY₂₈
MACROSCOPICALLY₂₈
MAGISTRATICALLY₂₃
MAINTAINABILITY₂₂
MANEUVERABILITY₂₅
MANNERISTICALLY₂₂
MANOEUVRABILITY₂₅
MARRIAGEABILITY₂₃
MARTENSITICALLY₂₂
MASOCHISTICALLY₂₇
MECHANISTICALLY₂₇
MELANCHOLICALLY₂₇
MENTALISTICALLY₂₂
MERCHANTABILITY₂₇
MEROBLASTICALLY₂₄
METAGENETICALLY₂₃
METALLURGICALLY₂₃
METAMORPHICALLY₂₉
MICROCOSMICALLY₂₈
MICROMORPHOLOGY₃₀
MICROPHOTOMETRY₂₉
MICROPHYSICALLY₃₂
MICROSCOPICALLY₂₈
MICROSEISMICITY₂₆
MICROTECHNOLOGY₂₈
MINERALOGICALLY₂₃
MISCELLANEOUSLY₂₂
MODERNISTICALLY₂₃
MONOGRAPHICALLY₂₈
MONOMOLECULARLY₂₄
MONOSPECIFICITY₂₉
MONOSYLLABICITY₂₇
MORPHOLOGICALLY₂₈
MOUTHWATERINGLY₂₇
MULTICULTURALLY₂₂
MULTITUDINOUSLY₂₁
MUSICOLOGICALLY₂₅
NECROMANTICALLY₂₄
NEOLOGISTICALLY₂₁
NEUROFIBRILLARY₂₃
NEUROPATHICALLY₂₅
NEUROPHYSIOLOGY₂₇
NEUROPLASTICITY₂₂
NEUROPSYCHIATRY₂₈
NEUROPSYCHOLOGY₂₉
NEUROSURGICALLY₂₁
NOMOGRAPHICALLY₂₈
NONANALYTICALLY₂₃
NONANATOMICALLY₂₂
NONAVAILABILITY₂₃
NONBELLIGERENCY₂₃
NONBIOLOGICALLY₂₃
NONCONSENSUALLY₂₀
NONCONTEMPORARY₂₄
NONCONTRIBUTORY₂₂
NONDOGMATICALLY₂₄
NONDRAMATICALLY₂₃
NONFLAMMABILITY₂₇
NONFUNCTIONALLY₂₃
NONHISTORICALLY₂₃
NONHOMOSEXUALLY₃₀
NONHYSTERICALLY₂₆
NONINFLAMMATORY₂₅
NONINFLATIONARY₂₁
NONJUDGMENTALLY₂₉
NONPRODUCTIVITY₂₆
NONSEQUENTIALLY₂₇
NONSPECIFICALLY₂₇
NONTHEISTICALLY₂₃
NORTHEASTWARDLY₂₅
NORTHWESTWARDLY₂₈
NUCLEOPHILICITY₂₇
OBSERVATIONALLY₂₃
OBSTRUCTIONALLY₂₂
OCHLOCRATICALLY₂₇
OESTROGENICALLY₂₁
ONTOGENETICALLY₂₁
ORIENTATIONALLY₁₈
ORTHODONTICALLY₂₄
ORTHOPSYCHIATRY₃₁
OSTEOPATHICALLY₂₅
OVERAMBITIOUSLY₂₅
OVERCONFIDENTLY₂₇
OVEREMOTIONALLY₂₃
OVEREXUBERANTLY₃₀
OVERFAMILIARITY₂₆
OVERSENSITIVITY₂₄
OVOVIVIPAROUSLY₂₉
PALAEOETHNOLOGY₂₄
PALAEOGEOGRAPHY₂₇
PALAEOLIMNOLOGY₂₃
PALAEONTOGRAPHY₂₆
PALAEOPATHOLOGY₂₆
PALAEOPHYTOLOGY₂₉
PALYNOLOGICALLY₂₆
PANTHEISTICALLY₂₅
PARAGENETICALLY₂₃
PARAGRAPHICALLY₂₈
PARALLACTICALLY₂₄
PARENTHETICALLY₂₅
PARLIAMENTARILY₂₂
PATHOPHYSIOLOGY₃₂
PERIODONTICALLY₂₃
PERIPATETICALLY₂₄
PERISTALTICALLY₂₂
PERPENDICULARLY₂₅
PERSPICACIOUSLY₂₆
PESSIMISTICALLY₂₄
PETROCHEMICALLY₂₉
PHARMACOTHERAPY₃₂
PHILOSOPHICALLY₃₀
PHONOGRAMICALLY₂₈
PHOTOCHEMICALLY₃₂
PHOTOELASTICITY₂₅
PHOTOMETRICALLY₂₇
PHOTOTACTICALLY₂₇
PHOTOTELEGRAPHY₂₉
PHOTOTOPOGRAPHY₃₁
PHOTOTROPICALLY₂₇
PHOTOTYPOGRAPHY₃₄
PHOTOXYLOGRAPHY₃₉
PHRENOLOGICALLY₂₆
PHYSIOLOGICALLY₂₉
PHYSIOPATHOLOGY₃₂
PHYTOCHEMICALLY₃₅
PIEZOMETRICALLY₃₃
PINOCYTOTICALLY₂₇
PISCICULTURALLY₂₄
PLANIMETRICALLY₂₄
PLANOMETRICALLY₂₄
PLASMOLYTICALLY₂₇
PLATITUDINOUSLY₂₁
PLENIPOTENTIARY₂₂
PLETHYSMOGRAPHY₃₄
PLURALISTICALLY₂₂
PLUTOCRATICALLY₂₄
POLYGENETICALLY₂₆
POLYGRAPHICALLY₃₁
POLYMORPHICALLY₃₂
POSTOPERATIVELY₂₅
POSTSTIMULATORY₂₂
POSTULATIONALLY₂₀
PRECIPITABILITY₂₆
PREFERENTIALITY₂₃
PREFIGURATIVELY₂₇
PREHISTORICALLY₂₅
PREMILLENNIALLY₂₂
PREPOSITIONALLY₂₂
PREPOSSESSINGLY₂₃
PRESYNAPTICALLY₂₇
PRETERNATURALLY₂₀
PROBLEMATICALLY₂₆
PROCRASTINATORY₂₂
PROGRAMMABILITY₂₇
PROGRESSIONALLY₂₁
PROPORTIONALITY₂₂
PROPORTIONATELY₂₂
PROPOSITIONALLY₂₂
PROPRIETORIALLY₂₂
PROTEOLYTICALLY₂₅
PSEPHOLOGICALLY₂₈
PSEUDOMUTUALITY₂₃
PSEUDOPREGNANCY₂₆
PSYCHEDELICALLY₃₁
PSYCHIATRICALLY₃₀
PSYCHOBIOGRAPHY₃₆
PSYCHOCHEMISTRY₃₅
PSYCHODELICALLY₃₁
PSYCHOGENICALLY₃₁
PSYCHOLOGICALLY₃₁
PSYCHOPATHOLOGY₃₄
PSYCHOSEXUALITY₃₅
PUSILLANIMOUSLY₂₂
PYROELECTRICITY₂₇
PYROPHOTOGRAPHY₃₄
PYROTECHNICALLY₃₀
QUATERCENTENARY₂₉
QUESTIONABILITY₂₉
QUODLIBETICALLY₃₂
RADIOAUTOGRAPHY₂₅
RADIOCHEMICALLY₂₈
RADIOMETRICALLY₂₃
RADIOPHONICALLY₂₆
RADIOSCOPICALLY₂₅
RADIOTELEGRAPHY₂₅
RECOGNISABILITY₂₃
RECOGNIZABILITY₃₂
RECONCILABILITY₂₄
REDUPLICATIVELY₂₆
REMEMBERABILITY₂₆
REMONSTRATINGLY₂₁
REMONSTRATIVELY₂₃
REPRODUCIBILITY₂₅
RESURRECTIONARY₂₀
RETROGRESSIVELY₂₂
RETROSPECTIVELY₂₅
REVOLUTIONARILY₂₁
RHOMBENPORPHYRY₃₅
RITUALISTICALLY₂₀
ROENTGENOGRAPHY₂₅
RONTGENOTHERAPY₂₄
ROUNDABOUTILITY₂₁
SABERMETRICALLY₂₄
SANCTIMONIOUSLY₂₂
SAPROPHYTICALLY₃₀
SCHOOLMISTRESSY₂₅
SCINTILLATINGLY₂₁
SCULPTURESQUELY₃₁
SEISMOLOGICALLY₂₃
SEMICONSCIOUSLY₂₄
SEMIDOCUMENTARY₂₅
SEMIPORNOGRAPHY₂₈
SEPTENTRIONALLY₂₀
SERENDIPITOUSLY₂₁
SESQUICENTENARY₂₉
SHAMANISTICALLY₂₅
SIDESPLITTINGLY₂₂
SIGNIFICATIVELY₂₇
SILVICULTURALLY₂₃
SLUMPFLATIONARY₂₅
SOCIALISTICALLY₂₂
SOCIOCULTURALLY₂₂
SOLIPSISTICALLY₂₂
SOMATOLOGICALLY₂₃
SONOGRAPHICALLY₂₆
SOPHISTICATEDLY₂₆
SOUTHWESTWARDLY₂₈
SPLENDIFEROUSLY₂₄
STALACTITICALLY₂₂
STALAGMITICALLY₂₃
STAPHYLORRHAPHY₃₄
STEREOCHEMISTRY₂₅
STEREOLOGICALLY₂₁
STEREOTAXICALLY₂₇
STEREOTYPICALLY₂₅
SUBREPTITIOUSLY₂₂
SUBSPECIFICALLY₂₉
SUBSTITUTIONARY₂₀
SUBTERRANEOUSLY₂₀
SUPERABUNDANTLY₂₃
SUPEREFFICIENCY₃₀
SUPERINCUMBENCY₂₈
SUPERINTENDENCY₂₃
SUPERNATIONALLY₂₀
SUPERPLASTICITY₂₄
SUPERSTITIOUSLY₂₀
SUPPLEMENTARILY₂₄
SUPPOSITIONALLY₂₂
SUPPRESSIBILITY₂₄
SUPRANATIONALLY₂₀
SURREPTITIOUSLY₂₀
SYCOPHANTICALLY₃₀
SYLLOGISTICALLY₂₄
SYMBOLISTICALLY₂₇
SYMPATHETICALLY₃₀
SYMPTOMATICALLY₂₉
SYNARTHRODIALLY₂₅
SYNECDOCHICALLY₃₁
SYNECOLOGICALLY₂₆
SYNERGISTICALLY₂₄
SYNTAGMATICALLY₂₆
TACHOMETRICALLY₂₇
TACHYMETRICALLY₃₀
TECHNOLOGICALLY₂₆
TELEGRAPHICALLY₂₆
TELEKINETICALLY₂₄
TELEPHOTOGRAPHY₂₉
TELEROBOTICALLY₂₂
TEMPERAMENTALLY₂₄
TENDERHEARTEDLY₂₃
TETARTOHEDRALLY₂₂
THALASSOTHERAPY₂₆
THEOREMATICALLY₂₅
THERAPEUTICALLY₂₅
THERMOCHEMISTRY₃₀
THERMOSTABILITY₂₅
THOROUGHGOINGLY₂₇
TOPOGRAPHICALLY₂₈
TOXICOLOGICALLY₃₀
TRANQUILISINGLY₂₈
TRANQUILIZINGLY₃₇
TRANSACTIONALLY₂₀
TRANSCRIPTIVELY₂₅
TRANSFERABILITY₂₃
TRANSGRESSIVELY₂₂
TRANSLATABILITY₂₀
TRANSLATIONALLY₁₈
TRANSMUTABILITY₂₂
TRANSNATIONALLY₁₈
TRANSPOSABILITY₂₂
TRISYLLABICALLY₂₅
TYPOGRAPHICALLY₃₁
ULTRAMICROSCOPY₂₆
ULTRASONOGRAPHY₂₄
UNACCEPTABILITY₂₆
UNADULTERATEDLY₂₀
UNADVENTUROUSLY₂₂
UNAESTHETICALLY₂₃
UNANSWERABILITY₂₃
UNANTICIPATEDLY₂₃
UNAPOSTOLICALLY₂₂
UNASSAILABILITY₂₀
UNATTAINABILITY₂₀
UNAUTHENTICALLY₂₃
UNBELIEVABILITY₂₅
UNCEREMONIOUSLY₂₂
UNCHALLENGEABLY₂₆
UNCHALLENGINGLY₂₅
UNCHANGEABILITY₂₆
UNCINEMATICALLY₂₄
UNCOMPLAININGLY₂₅
UNCOMPLAISANTLY₂₄
UNCOMPLIMENTARY₂₆
UNCONDITIONALLY₂₁
UNCONSTRAINEDLY₂₁
UNCOOPERATIVELY₂₅
UNDEPENDABILITY₂₄
UNDERSTANDINGLY₂₁
UNDERWHELMINGLY₂₈
UNEMPLOYABILITY₂₇
UNEXCEPTIONABLY₃₁
UNEXCEPTIONALLY₂₉
UNEXTRAORDINARY₂₆
UNGRAMMATICALLY₂₅
UNIDEOLOGICALLY₂₂
UNIDIOMATICALLY₂₃
UNIMAGINATIVELY₂₄
UNINFORMATIVELY₂₆
UNINSTRUCTIVELY₂₃
UNINTELLIGENTLY₁₉
UNINTENTIONALLY₁₈
UNINTERESTINGLY₁₉
UNINTERMITTEDLY₂₁
UNINTERRUPTEDLY₂₁
UNMANAGEABILITY₂₃
UNMISTAKABILITY₂₆
UNOBJECTIONABLY₃₁
UNPARLIAMENTARY₂₂
UNPATRIOTICALLY₂₂
UNPRECEDENTEDLY₂₄
UNPRETENTIOUSLY₂₀
UNPROFITABILITY₂₅
UNPROGRESSIVELY₂₄
UNQUESTIONINGLY₂₈
UNREALISTICALLY₂₀
UNREVOLUTIONARY₂₁
UNSENTIMENTALLY₂₀
UNSPECTACULARLY₂₄
UNSUBSTANTIALLY₂₀
UNSYMMETRICALLY₂₇
UNTHREATENINGLY₂₂
UNTRADITIONALLY₁₉
UNTRUSTWORTHILY₂₄
UNVERIFIABILITY₂₆
VENTRILOQUIALLY₃₀
VICISSITUDINARY₂₄
VIOLINISTICALLY₂₃
VISCOELASTICITY₂₅
VIVISECTIONALLY₂₆
VOYEURISTICALLY₂₆
XENOMORPHICALLY₃₄
XEROGRAPHICALLY₃₃
XERORADIOGRAPHY₃₂

Letters by positionIn 65% of these words the 14th letter is L.

2nd letter

N21%
O16%
E12%

10th letter

I39%
B15%
T10%

11th letter

C34%
I30%
O9%

12th letter

A50%
L19%
N8%

13th letter

L44%
I22%
E6%

14th letter

L65%
T20%
R6%

Highest-scoring words

Scrabble and Words With Friends points, before board bonuses

Score spreadMost of these words score 23 in Scrabble; PHOTOXYLOGRAPHY tops the list with 39. Scores before board bonuses.

1818 points: 8 words
19 points: 5 words
2020 points: 38 words
21 points: 36 words
2222 points: 68 words
23 points: 88 words
2424 points: 79 words
25 points: 81 words
2626 points: 74 words
27 points: 56 words
2828 points: 46 words
29 points: 39 words
3030 points: 29 words
31 points: 22 words
3232 points: 13 words
33 points: 7 words
3434 points: 7 words
35 points: 7 words
3636 points: 4 words
37 points: 2 words
3838 points: 0 words
39 points: 1 words

Word	Scrabble	Words With Friends	Dictionaries
PHOTOXYLOGRAPHY	39	39	Collins only
HYPNOTIZABILITY	37	38	All three
TRANQUILIZINGLY	37	42	Collins only
PSYCHOBIOGRAPHY	36	37	All three
COENZYMATICALLY	36	40	All three
HYPERPHYSICALLY	36	36	Collins · NWL
HYPEREFFICIENCY	36	37	NWL only
EXTRAJUDICIALLY	35	40	All three
PSYCHOCHEMISTRY	35	35	Collins only
PHYTOCHEMICALLY	35	37	All three
PSYCHOSEXUALITY	35	36	All three
CHEMOPSYCHIATRY	35	35	Collins only

The ending is unusually productive at this length: internationally, environmentally, and psychologically show how easily an adjective or noun can become an -ly adverb. Yet everyday vocabulary is thin; only 8 entries count as common. This is a broad tournament-word list, not a collection of terms you are likely to meet in ordinary conversation.

What stands out in 15-letter words ending in Y

710 entries end in Y across the tournament-dictionary set.
Collins includes 659, compared with 508 in NWL2023 and 418 in ENABLE; the dictionaries overlap.
523 entries have a definition, while only 8 are classed as common.
PHOTOXYLOGRAPHY leads the scoring list at 39 points; HYPNOTIZABILITY and TRANQUILIZINGLY each score 37.

Why do so many long words end in Y?

Many recognizable examples use the adverb ending -ly. INTERNATIONALLY, ENVIRONMENTALLY, EXTRAORDINARILY, and PSYCHOLOGICALLY turn familiar descriptive ideas into long forms, making the final Y a strong clue when you know the word's meaning or root.

Not every entry follows that pattern. CONFIDENTIALITY and INCOMPATIBILITY end in -ity, while PATHOPHYSIOLOGY belongs to technical vocabulary. That mix explains why the list contains both readable adverbs and specialized terms, despite sharing the same length and final letter.

First letters cluster the same way. I opens 95 of the 710 words, P opens 88, and C opens 75, while the average tile score is 25.3. One length down, the 14-letter version of this list holds 1,063 entries, so the ending stays productive at nearly every length.

How to use 15-letter words ending in Y in word games

For Scrabble scoring, PHOTOXYLOGRAPHY is the standout at 39 points, with HYPNOTIZABILITY and TRANQUILIZINGLY next at 37. Those unusual, letter-heavy words are worth recognizing, but a high score alone does not make a word easy to form on your board.

The main limitation is dictionary coverage: the list has 659 Collins entries, 508 in NWL2023, and 418 in ENABLE, so a word accepted in one game may not be accepted in another. Check your game's word list before building a play around a rare term such as COENZYMATICALLY or HYPERPHYSICALLY.

Questions people ask

How many 15-letter words end in Y?

There are 710 tournament-dictionary words with 15 letters that end in Y. The entries range from familiar adverbs such as INTERNATIONALLY to technical words such as PATHOPHYSIOLOGY, so the count includes a mix of everyday and specialized vocabulary.

Which 15-letter word ending in Y scores the most?

PHOTOXYLOGRAPHY leads the scoring list at 39 points. HYPNOTIZABILITY and TRANQUILIZINGLY follow at 37 points each, while PSYCHOBIOGRAPHY and COENZYMATICALLY score 36. These totals make the first word the top scorer among the listed examples.

Are 15-letter words ending in Y common?

Only 8 entries in this group are classed as common by word frequency. Familiar-looking forms such as ENVIRONMENTALLY sit beside rare technical vocabulary, so recognizing the -ly ending does not mean every long entry will be familiar or accepted in your game.

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