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Meaning of “un-” in the English Dictionary

"un-" in American English

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 us   /ʌn/
used to ​add the ​meaning "not," "​lacking," or "the ​opposite of" to ​adjectives, ​adverbs, ​verbs, and ​nouns: unaided; unalterable; unaltered; unanticipated; unappreciated; unapproachable; unassigned; unassisted; unattainable; unbiased; uncommunicative; unconfined; unconvinced; uncultured; undefined; undiminished; uneconomical; unlicensed; unmodified; unmonitored; unmotivated; unobtainable; ​unpublished; ​unregulated; unrestricted; unrestrictive; unscheduled; unstressed; unstructured; unsustainable

UNnoun [U]

 us   /ˈjuˈen/
abbreviation forUnitedNations (= an ​internationalorganization that was ​established in 1945 to ​maintainworldpeace)
(Definition of un- from the Cambridge Academic Content Dictionary © Cambridge University Press)
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“un-” in British English

“un-” in American English

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