13-Letter Words Starting With U

There are 350 13-letter words that start with U. 132 are common words, such as UNACCOMPANIED and UNACCOUNTABLE. A rarer one is URETHROSCOPES. In this set, N is the most frequent open letter (329 words). 110 words contain a doubled letter.

Full list 350

Common words

unaccompaniedunaccountableunaccountablyunadulteratedunadventurousunambiguouslyunanticipatedunappealinglyunappreciatedunawarenessesunceremoniousuncertainties
unaccompaniedunaccountableunaccountablyunadulteratedunadventurousunambiguouslyunanticipatedunappealinglyunappreciatedunawarenessesunceremoniousuncertaintiesuncircumciseduncleanlinessuncleannessesuncomfortableuncomfortablyuncompensateduncomplaininguncomplicatedunconcernedlyunconditionalunconditionedunconformableunconquerableunconsciousesunconsciouslyunconsecratedunconstrainedunconsummateduncooperativeuncoordinatedunderachievedunderachieverunderachievesundercarriageunderchargingunderclassmanunderclassmenunderclothingundercoatingsundercurrentsunderemployedunderestimateunderexposingunderexposureundergarmentsundergraduateunderhandedlyunderpaymentsunderpinningsundershootingunderstandingunderstudyingunderwhelmingundisciplinedundistributedunearthlinessunembarrassedunemploymentsunenlightenedunequivocallyunexceptionalunfamiliarityunfashionableunfashionablyunflinchinglyunforeseeableunforgettableunforgettablyunfortunatelyunfriendliestungentlemanlyungodlinessesungrammaticalunhappinessesunhealthinessunimaginativeunimpeachableuninformativeuninhabitableuninhibitedlyunintelligentunintentionaluninterestinguninterruptedunionizationsuniversalizeduniversalizesunjustifiableunjustifiablyunlikelihoodsunluckinessesunmentionableunnaturalnessunnecessarilyunobtrusivelyunparallelledunpasteurizedunprecedentedunpredictableunpredictablyunpretentiousunpreventableunquestioningunrecoverableunrelentinglyunreliabilityunremittinglyunrepresentedunselfishnessunsentimentalunsightlinessunsoundnessesunspectacularunsubscribingunsubstantialunsuitabilityunsupportableunsustainableunsymmetricalunsympatheticuntrustworthyunwarrantableunwillingnessunworldlinessupperclassmanupperclassmenuprightnessesurbanizationsurbanologistsuselessnessesunenforceableunimplementeduninitializeduninstallableuninterpretedumbelliferousunabbreviatedunanimousnessunarticulatedunassimilableunassimilatedunbelievinglyuncapitalizeduncertainnessuncharismaticuncompetitiveunconceivableunconceivablyunconnectedlyunconquerablyunconstricteduncontainableuncontentiousunconvertibleuncorrectableundauntednessundeliverableunderactivityunderdressingundereducatedunderemphasisunderinflatedunderpaintingunderspendingunderstrapperunderstrengthundersurfacesunderutilizedundiagnosableundiscouragedundisguisedlyunemancipatedunembellishedunemotionallyunestablishedunexaggeratedunexperiencedunexplainableunexplainablyunfalsifiableunfulfillableuniformnessesunilateralismunilateralistunillustratedunimpassionedunimpeachablyunimportancesuninfluentialuninspiringlyuninstructiveuniversalismsunkemptnessesunmistakeablyunmitigatedlyunnaturalizedunnilpentiumsunnilquadiumsunoffensivelyunoriginalityunorthodoxiesunpracticableunpresentableunpressurizedunproblematicunprogressiveunpromisinglyunpublishableunpunctualityunqualifiedlyunreadabilityunreceptivelyunrecommendedunrecompensedunremuneratedunrepentantlyunresentfullyunresistinglyunsatisfiableunsensationalunserviceableunsociabilityunsparingnessunspecializedunsurpassableunsusceptibleuntraditionaluntransformedunwarrantablyunwittingnessunworkabilityuglificationsultracautiousultracriticalultradistanceultrafamiliarultrafeminineultrafiltrateultraleftismsultraleftistsultraliberalsultramarathonultramilitantultramontanesultraorthodoxultraphysicalultrapowerfulultraradicalsultrararefiedultrarationalultrarealismsultrarealistsultrareliableultrarightistultraromanticultraroyalistultraviolenceultravirilityumbilicationsunadjudicatedunapologizingunassertivelyunassuageableunbeautifullyunbelligerentunboundednessunbowdlerizeduncalculatinguncanninessesunchallengingunchlorinateduncollectibleunconformablyunconstraintsunconstructeduncouthnessesuncustomarilyunderbudgetedundercountingunderemphasesunderfinancedundergrounderunderlaymentsunderpreparedunderreactingunderreportedundersheriffsunderstaffingunderstatedlyundersteeringundersuppliesunderutilizesundescribableundeviatinglyundialecticalundissociatedundoctrinaireundutifulnessunelectrifiedunemployablesunencouragingunequivocablyunfalteringlyunfeelingnessunforthcomingunguardednessunhandicappedunhandinessesunhomogenizedunideologicalunintimidatedunionisationsuniparentallyunitarianismsuniversalistsuniversalnessunknowabilityunmaliciouslyunmanipulatedunmanlinessesunmetabolizedunparasitizedunperformableunpicturesqueunquietnessesunreadinessesunreasoninglyunreclaimableunreminiscentunrespectableunrighteouslyunsalvageableunselectivelyunseriousnessunsettlednessunsettlementsunspecifiableunsymptomaticuntheoreticalunthreateningunusualnessesunwholesomelyupgradabilityuptightnessesuranographiesurbanisationsurediniosporeurethroscopes

About this list

Words
350 (132 common words)
Common example
unaccompanied
Rare example
urethroscopes
Doubled letters
110
Ending in S
88
Most frequent letter
N (329)

Questions

How many 13-letter words starting with u are there?

350. 132 of them are common words.

What is a common example?

UNACCOMPANIED is among the common words in this set.