unimaginableadjUnable to be imagined; inconceivable or mind-boggling; beyond belief.
unimaginablyadvTo an extent or in a way that cannot be, or could not have been, imagined
unimpressiveadjLacking the ability to impress, inability to produce an impression.
uninhabitableadjNot fit for people (or other living things) to live in; not able to be inhabited.
uninitiatedadjNot having been initiated; not having the special knowledge of a particular group.
uninstallverbTo completely remove hardware or software from a computer system.
uninstalledverbsimple past and past participle of uninstall
uninsuredadjNot insured; not having insurance.
unintentionaladjNot intended or deliberate; inadvertent; unwitting.
unintentionallyadvWithout meaning to, in an unintentional manner, not intentionally.
uninterestingadjArousing little or no interest; boring or uneventful.
uninvitingadjNot inviting, not attractive, not welcoming.
unionnounThe act of uniting or joining two or more things into one.
unionismnounThe support of advocacy of a union, especially of a trade union.
unionistadjOf or pertaining to unionism (in any sense).
unionizeverbTo organize workers into a union.
unionizedverbsimple past and past participle of unionize
UniontownnameA number of places in the United States:
uniqueadjBeing the only one of its kind; unequaled, unparalleled or unmatched.
uniquenessnounThe state or quality of being unique or one of a kind.
unironicallyadvIn an unironic manner; without irony; sincerely; genuinely.
unisexadjNot distinguished on the basis of sex or gender; suitable for any sex or gender.
UNISONnameA public-sector trade union in the United Kingdom.
Spelling & Dictionary Insight
The English alphabetical index for the letter U contains 1,433 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 29 pages, and you are currently viewing page 15. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.
On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.
For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "U" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.