15-letter words starting with U

15-letter words starting with U number 330, led by long forms such as unintentionally, underprivileged, and ultrasonography.

330 wordsTop pick UNINTENTIONALLYHighest score UNDEREMPHASIZED 33

2 of 330 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

P starts the most 15-letter words (695); Y starts the fewest (2). U ranks #9 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 330 · most-used first

UNINTENTIONALLY₁₈
UNCONDITIONALLY₂₁
UNDERPRIVILEGED₂₃
UNSUBSTANTIATED₁₈
UNDERESTIMATING₁₉
UNDERPERFORMING₂₄
UNCONSCIOUSNESS₁₉
UNSOPHISTICATED₂₃
UNCEREMONIOUSLY₂₂
UNSPORTSMANLIKE₂₃
UNCONTROVERSIAL₂₀
UNREALISTICALLY₂₀
UNDEREMPLOYMENT₂₅
UNDISTINGUISHED₂₁
ULTRASONOGRAPHY₂₄
UNRIGHTEOUSNESS₁₉
UNDERESTIMATION₁₈
UNQUESTIONINGLY₂₈
UNPRECEDENTEDLY₂₄
UNPRONOUNCEABLE₂₁
UNCOMMUNICATIVE₂₆
UNINTERRUPTIBLE₁₉
UNINTERRUPTEDLY₂₁
ULTRAFILTRATION₁₈
UNPREPOSSESSING₂₀
UNRECONSTRUCTED₂₀
ULTRASTRUCTURAL₁₇
UNDERINVESTMENT₂₁
UNCOMPREHENDING₂₆
UNOBJECTIONABLE₂₈
UNSELFCONSCIOUS₂₂
UNAUTHENTICATED₂₁
UNCHALLENGEABLE₂₃
UNPARLIAMENTARY₂₂
UNCOMPLIMENTARY₂₆
UNDEMONSTRATIVE₂₁
UNDERSTATEMENTS₁₈
UNACCEPTABILITY₂₆
UNIMAGINATIVELY₂₄
ULTRACENTRIFUGE₂₁
UNKNOWLEDGEABLE₂₆
UNDERSTANDINGLY₂₁
UNDERPERFORMERS₂₃
UNACCOMMODATING₂₅
UNCOMPASSIONATE₂₁
UNEXCEPTIONABLE₂₈
UNCOMPLAININGLY₂₅
UNDERPRODUCTION₂₁

Showing the top 48 of 330 words. See every valid word

All valid words 330

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

UBIQUITARIANISM₂₈
UBIQUITINATIONS₂₆
ULTIMOGENITURES₁₈
ULTRACENTRIFUGE₂₁
ULTRACOMMERCIAL₂₃
ULTRACONVENIENT₂₀
ULTRACREPIDATED₂₁
ULTRACREPIDATES₂₀
ULTRADEMOCRATIC₂₂
ULTRAFASTIDIOUS₁₉
ULTRAFILTRATION₁₈
ULTRALIBERALISM₁₉
ULTRAMARATHONER₂₀
ULTRAMICROMETER₂₁
ULTRAMICROSCOPE₂₃
ULTRAMICROSCOPY₂₆
ULTRAMICROTOMES₂₁
ULTRAMODERNISMS₂₀
ULTRAMODERNISTS₁₈
ULTRAMONTANISMS₁₉
ULTRAMONTANISTS₁₇
ULTRAPRECISIONS₁₉
ULTRASONOGRAPHY₂₄
ULTRASTRUCTURAL₁₇
ULTRASTRUCTURES₁₇
ULTRAVIRILITIES₁₈
UNACCEPTABILITY₂₆
UNACCOMMODATING₂₅
UNACQUAINTANCES₂₈
UNADULTERATEDLY₂₀
UNADVENTUROUSLY₂₂
UNADVISABLENESS₂₁
UNADVISEDNESSES₂₀
UNAESTHETICALLY₂₃
UNALTERABLENESS₁₇
UNAMIABLENESSES₁₉
UNANIMOUSNESSES₁₇
UNANSWERABILITY₂₃
UNANTICIPATEDLY₂₃
UNAPOSTOLICALLY₂₂
UNAPPRECIATIONS₂₁
UNAPPREHENSIBLE₂₄
UNASCERTAINABLE₁₉
UNASHAMEDNESSES₂₁
UNASSAILABILITY₂₀
UNASSERTIVENESS₁₈
UNATTAINABILITY₂₀
UNAUTHENTICALLY₂₃
UNAUTHENTICATED₂₁
UNAUTHORITATIVE₂₁
UNAVAILABLENESS₂₀
UNAVOIDABLENESS₂₁
UNBELIEVABILITY₂₅
UNBELIEVINGNESS₂₁
UNBENDINGNESSES₁₉
UNBIASSEDNESSES₁₈
UNBLESSEDNESSES₁₈
UNBOUNDEDNESSES₁₉
UNBRIDLEDNESSES₁₉
UNCANONICALNESS₁₉
UNCATEGORISABLE₂₀
UNCATEGORIZABLE₂₉
UNCEASINGNESSES₁₈
UNCEREMONIOUSLY₂₂
UNCERTAINNESSES₁₇
UNCHALLENGEABLE₂₃
UNCHALLENGEABLY₂₆
UNCHALLENGINGLY₂₅
UNCHANGEABILITY₂₆
UNCHOREOGRAPHED₂₇
UNCHRISTIANISED₂₁
UNCHRISTIANISES₂₀
UNCHRISTIANIZED₃₀
UNCHRISTIANIZES₂₉
UNCHRISTIANLIKE₂₄
UNCHRONOLOGICAL₂₃
UNCINEMATICALLY₂₄
UNCIRCUMCISIONS₂₃
UNCIRCUMSCRIBED₂₆
UNCIVILISEDNESS₂₁
UNCIVILIZEDNESS₃₀
UNCLEANLINESSES₁₇
UNCLIMBABLENESS₂₃
UNCLOUDEDNESSES₁₉
UNCOMBATIVENESS₂₄
UNCOMMUNICATIVE₂₆
UNCOMPANIONABLE₂₃
UNCOMPASSIONATE₂₁
UNCOMPLAININGLY₂₅
UNCOMPLAISANTLY₂₄
UNCOMPLIMENTARY₂₆
UNCOMPREHENDING₂₆
UNCOMPREHENSIVE₂₇
UNCOMPROMISABLE₂₅
UNCONCERNEDNESS₂₀
UNCONDITIONALLY₂₁
UNCONNECTEDNESS₂₀
UNCONSCIENTIOUS₁₉
UNCONSCIOUSNESS₁₉
UNCONSENTANEOUS₁₇
UNCONSTRAINABLE₁₉
UNCONSTRAINEDLY₂₁
UNCONTROVERSIAL₂₀
UNCONVENTIONALS₂₀
UNCOOPERATIVELY₂₅
UNCOPYRIGHTABLE₂₈
UNCOURTLINESSES₁₇
UNCREATEDNESSES₁₈
UNDAUNTEDNESSES₁₇
UNDECIDEDNESSES₂₀
UNDEMANDINGNESS₂₀
UNDEMONSTRATIVE₂₁
UNDEPENDABILITY₂₄
UNDERACTIVITIES₂₁
UNDERCAPITALISE₂₀
UNDERCAPITALIZE₂₉
UNDERDEVELOPING₂₃
UNDERDIAGNOSING₁₉
UNDEREMPHASISED₂₄
UNDEREMPHASISES₂₃
UNDEREMPHASIZED₃₃
UNDEREMPHASIZES₃₂
UNDEREMPLOYMENT₂₅
UNDERESTIMATING₁₉
UNDERESTIMATION₁₈
UNDERFULFILLING₂₃
UNDERGRADUETTES₁₈
UNDERHANDEDNESS₂₁
UNDERINFLATIONS₁₉
UNDERINVESTMENT₂₁
UNDERNICENESSES₁₈
UNDERNOURISHING₂₀
UNDERNUTRITIONS₁₆
UNDERPERFORMERS₂₃
UNDERPERFORMING₂₄
UNDERPOPULATION₂₀
UNDERPRIVILEGED₂₃
UNDERPRODUCTION₂₁
UNDERPUBLICISED₂₃
UNDERPUBLICIZED₃₂
UNDERSTANDINGLY₂₁
UNDERSTATEDNESS₁₇
UNDERSTATEMENTS₁₈
UNDERVALUATIONS₁₉
UNDERWHELMINGLY₂₈
UNDESIRABLENESS₁₈
UNDETERMINATION₁₈
UNDISAPPOINTING₂₁
UNDISCIPLINABLE₂₂
UNDISTINGUISHED₂₁
UNDIVIDEDNESSES₂₁
UNDOMESTICATING₂₁
UNDUTIFULNESSES₁₉
UNEARTHLINESSES₁₈
UNEATABLENESSES₁₇
UNEMPLOYABILITY₂₇
UNENDURABLENESS₁₈
UNEQUIVOCALNESS₂₉
UNEXCEPTIONABLE₂₈
UNEXCEPTIONABLY₃₁
UNEXCEPTIONALLY₂₉
UNEXTRAORDINARY₂₆
UNFAILINGNESSES₁₉
UNFAMILIARITIES₂₀
UNFAVORABLENESS₂₃
UNFEASIBILITIES₂₀
UNFEELINGNESSES₁₉
UNFEIGNEDNESSES₂₀
UNFLAPPABLENESS₂₄
UNFORGIVENESSES₂₂
UNFORGIVINGNESS₂₃
UNFORTUNATENESS₁₈
UNFOSSILIFEROUS₂₁
UNFOUNDEDNESSES₂₀
UNGENTLEMANLIKE₂₂
UNGENUINENESSES₁₆
UNGRAMMATICALLY₂₅
UNGUARDEDNESSES₁₈
UNHEALTHFULNESS₂₄
UNHEALTHINESSES₂₁
UNHELPFULNESSES₂₃
UNHURTFULNESSES₂₁
UNIDEOLOGICALLY₂₂
UNIDIOMATICALLY₂₃
UNIFORMITARIANS₂₀
UNILATERALITIES₁₅
UNIMAGINATIVELY₂₄
UNINFORMATIVELY₂₆
UNINHIBITEDNESS₂₁
UNINSTRUCTIVELY₂₃
UNINTELLECTUALS₁₇
UNINTELLIGENCES₁₈
UNINTELLIGENTLY₁₉
UNINTENTIONALLY₁₈
UNINTERESTINGLY₁₉
UNINTERMITTEDLY₂₁
UNINTERPRETABLE₁₉
UNINTERRUPTEDLY₂₁
UNINTERRUPTIBLE₁₉
UNINVENTIVENESS₂₁
UNIVERSALNESSES₁₈
UNKNOWABILITIES₂₄
UNKNOWINGNESSES₂₃
UNKNOWLEDGEABLE₂₆
UNLEARNEDNESSES₁₆
UNLIMITEDNESSES₁₈
UNMANAGEABILITY₂₃
UNMEANINGNESSES₁₈
UNMELODIOUSNESS₁₈
UNMINDFULNESSES₂₁
UNMISTAKABILITY₂₆
UNMITIGATEDNESS₁₉
UNMUSICALNESSES₁₉
UNNATURALNESSES₁₅
UNNECESSARINESS₁₇
UNOBJECTIONABLE₂₈
UNOBJECTIONABLY₃₁
UNOBTRUSIVENESS₂₀
UNORIGINALITIES₁₆
UNPARLIAMENTARY₂₂
UNPATRIOTICALLY₂₂
UNPEACEABLENESS₂₁
UNPERFECTNESSES₂₂
UNPHILOSOPHICAL₂₇
UNPITIFULNESSES₂₀
UNPRACTICALNESS₂₁
UNPRACTISEDNESS₂₀
UNPRECEDENTEDLY₂₄
UNPREMEDITATION₂₀
UNPREPOSSESSING₂₀
UNPRETENTIOUSLY₂₀
UNPRINTABLENESS₁₉
UNPROFESSIONALS₂₀
UNPROFITABILITY₂₅
UNPROGRESSIVELY₂₄
UNPRONOUNCEABLE₂₁
UNPROPORTIONATE₁₉
UNPROTECTEDNESS₂₀
UNPROTESTANTISE₁₇
UNPROTESTANTIZE₂₆
UNPUNCTUALITIES₁₉
UNQUALIFIEDNESS₂₈
UNQUESTIONINGLY₂₈
UNREADABILITIES₁₈
UNREALISTICALLY₂₀
UNRECOMMENDABLE₂₄
UNRECONCILIABLE₂₁
UNRECONSTRUCTED₂₀
UNRELENTINGNESS₁₆
UNRELIABILITIES₁₇
UNREMITTINGNESS₁₈
UNRESTFULNESSES₁₈
UNRESTINGNESSES₁₆
UNREVOLUTIONARY₂₁
UNRIGHTEOUSNESS₁₉
UNROADWORTHIEST₂₂
UNRUFFLEDNESSES₂₂
UNSAINTLINESSES₁₅
UNSALEABILITIES₁₇
UNSATISFACTIONS₂₀
UNSATISFIEDNESS₁₉
UNSAVOURINESSES₁₈
UNSEAWORTHINESS₂₁
UNSECTARIANISMS₁₉
UNSELFCONSCIOUS₂₂
UNSELFISHNESSES₂₁
UNSENTIMENTALLY₂₀
UNSERIOUSNESSES₁₅
UNSETTLEDNESSES₁₆
UNSHAKEABLENESS₂₄
UNSHAPELINESSES₂₀
UNSIGHTLINESSES₁₉
UNSINKABILITIES₂₁
UNSKILFULNESSES₂₂
UNSOCIABILITIES₁₉
UNSOLVABILITIES₂₀
UNSOPHISTICATED₂₃
UNSPARINGNESSES₁₈
UNSPEAKABLENESS₂₃
UNSPECTACULARLY₂₄
UNSPIRITUALISED₁₈
UNSPIRITUALISES₁₇
UNSPIRITUALIZED₂₇
UNSPIRITUALIZES₂₆
UNSPORTSMANLIKE₂₃
UNSPOTTEDNESSES₁₈
UNSTATESMANLIKE₂₁
UNSTEADFASTNESS₁₉
UNSUBSTANTIALLY₂₀
UNSUBSTANTIATED₁₈
UNSUITABILITIES₁₇
UNSUSPECTEDNESS₂₀
UNSYMMETRICALLY₂₇
UNTACTFULNESSES₂₀
UNTAINTEDNESSES₁₆
UNTAMABLENESSES₁₉
UNTEACHABLENESS₂₂
UNTENABLENESSES₁₇
UNTHINKABLENESS₂₄
UNTHREATENINGLY₂₂
UNTHRIFTINESSES₂₁
UNTRACTABLENESS₁₉
UNTRADITIONALLY₁₉
UNTRANSFERRABLE₂₀
UNTRANSMIGRATED₁₉
UNTRANSMISSIBLE₁₉
UNTRUSTWORTHILY₂₄
UNTUNABLENESSES₁₇
UNTUNEFULNESSES₁₈
UNUTTERABLENESS₁₇
UNVERIFIABILITY₂₆
UNWEARIEDNESSES₁₉
UNWELCOMENESSES₂₂
UNWHOLESOMENESS₂₃
UNWIELDLINESSES₁₉
UNWILLINGNESSES₁₉
UNWITTINGNESSES₁₉
UNWOMANLINESSES₂₀
UNWORKABILITIES₂₄
UNWORLDLINESSES₁₉
UPGRADABILITIES₂₁
UROGYNECOLOGIES₂₂
UROGYNECOLOGIST₂₂
UTEROGESTATIONS₁₆
UTILITARIANISED₁₆
UTILITARIANISES₁₅
UTILITARIANISMS₁₇
UTILITARIANIZED₂₅
UTILITARIANIZES₂₄
UTTERABLENESSES₁₇

Letters by positionIn 89% of these words the 2nd letter is N.

2nd letter

N89%
L7%
T2%

10th letter

N26%
I12%
A12%

11th letter

E31%
I15%
N12%

13th letter

S27%
I20%
E18%

14th letter

E38%
L20%
S17%

15th letter

S55%
Y19%
E11%

Highest-scoring words

Scrabble and Words With Friends points, before board bonuses

Score spreadMost of these words score 19 in Scrabble; UNDEREMPHASIZED tops the list with 33. Scores before board bonuses.

1515 points: 5 words
16 points: 10 words
1717 points: 24 words
18 points: 34 words
1919 points: 46 words
20 points: 44 words
2121 points: 45 words
22 points: 20 words
2323 points: 28 words
24 points: 22 words
2525 points: 10 words
26 points: 16 words
2727 points: 6 words
28 points: 8 words
2929 points: 5 words
30 points: 2 words
3131 points: 2 words
32 points: 2 words
3333 points: 1 words

Word	Scrabble	Words With Friends	Dictionaries
UNDEREMPHASIZED	33	36	All three
UNDEREMPHASIZES	32	35	All three
UNDERPUBLICIZED	32	39	All three
UNOBJECTIONABLY	31	39	Collins · NWL
UNEXCEPTIONABLY	31	37	All three
UNCHRISTIANIZED	30	33	Collins only
UNCIVILIZEDNESS	30	36	Collins only
UNCATEGORIZABLE	29	35	All three
UNCHRISTIANIZES	29	32	Collins only
UNDERCAPITALIZE	29	34	Collins · NWL
UNEQUIVOCALNESS	29	36	Collins · NWL
UNEXCEPTIONALLY	29	35	Collins · NWL

The U group has fewer entries than many other starting letters: 15-letter words beginning with P, C, and S each outnumber it. Most examples have a familiar un- or under- opening, but only 2 qualify as common by frequency. Dictionary coverage also varies: Collins includes nearly the full set, while NWL2023 and ENABLE accept smaller portions.

The U-word pattern at a glance

The collection contains 330 tournament-dictionary entries, all beginning with U.
Only 2 entries rank among the most common English words by frequency.
Collins includes 294 words; NWL2023 includes 192, and ENABLE includes 126.
The most frequent final letter is S, with Y a distant second.

Which U starters score highest?

UNDEREMPHASIZED leads the scoring examples at 33 points. Its high-value letters make it stand out from familiar-looking long words such as unintentionally and underprivileged, which are strong length matches but not the top scorer.

UNDEREMPHASIZES and UNDERPUBLICIZED each score 32 points, just one behind the leader. UNOBJECTIONABLY and UNEXCEPTIONABLY follow at 31. These near-ties are a reminder to check the exact spelling: changing the ending can change the score.

What patterns narrow the search?

S is the clear leader among final letters: 180 words end that way, compared with 62 ending in Y and 36 ending in E. That makes a known final S a useful filter, while endings such as G, N, L, and T appear only in small groups.

The U prefix creates a long, varied set, from underestimating and underemployment to ultrasonography and ultrafiltration. Yet the number of entries can overstate everyday usefulness: just 2 are common by frequency, and dictionary coverage differs sharply. Check your game's word list before committing to an unfamiliar form.

For a length clue, confirm every letter rather than relying on the opening alone. Fifteen-letter entries such as unsubstantiated, unsophisticated, and uncontroversial share the U start but offer very different endings and point totals.

Questions people ask

How many 15-letter words start with U?

There are 330 tournament-dictionary words with 15 letters that begin with U. The set includes familiar forms such as unintentionally and underprivileged alongside technical terms such as ultrasonography. Only 2 rank among common English words by frequency, so many matches are specialist or uncommon vocabulary.

Which 15-letter U word has the highest score?

UNDEREMPHASIZED is the top scorer at 33 points. UNDEREMPHASIZES and UNDERPUBLICIZED are close behind at 32 points each, while UNOBJECTIONABLY and UNEXCEPTIONABLY score 31. The exact spelling matters because a changed ending can alter the tile total.

Do many 15-letter words starting with U end in S?

Yes. S is the most frequent final letter, with 180 entries; Y comes next with 62, followed by E with 36. If the clue gives the final letter as S, prioritize that ending, but confirm the full word and your game's dictionary before playing.

Keep going

Related lists

14-letter words start with U

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