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WordReference Random House Learner's Dictionary of American English © 2024un-1 ,prefix. - un- is used very freely to form adjectives and the adverbs and nouns formed from these adjectives. It means "not,'' and it brings negative or opposite force:unfair, unfairly, unfairness; unseen;unfitting;unformed;
unheard-of;
unrest;
unemployment.
un-2 ,prefix. - un- is attached to verbs, and means "a reversal of some action or state, or a removal, a taking away, or a release'':unbend;uncork;unfasten.
- un- is also attached to some verbs to intensify the meaning:unloose (= let loose with force).
UN or U.N.,an abbreviation of:- Government, United Nations.
Collins Concise English Dictionary © HarperCollins Publishers:: un- prefix - (freely used with adjectives, participles, and their derivative adverbs and nouns: less frequently used with certain other nouns) not; contrary to; opposite of: uncertain, uncomplaining, unemotionally, untidiness, unbelief, unrest, untruth
Etymology: from Old English on-, un-; related to Gothic on-, German un-, Latin in- un- prefix forming verbs and verbal derivatives - denoting reversal of an action or state: uncover, untangle
- denoting removal from, release, or deprivation: unharness, unman, unthrone
- (intensifier): unloose
Etymology: from Old English un-, on-; related to Gothic and-, German ent-, Latin ante un (ən),USA pronunciation pron. [Dial.]- Slang Termsone:young uns; He's a bad un.
Also, 'un. UN ,- Government, See United Nations (def. 1).
Also, U.N. un-1 ,- a prefix meaning "not,'' freely used as an English formative, giving negative or opposite force in adjectives and their derivative adverbs and nouns (unfair;
unfairly;
unfairness;
unfelt;
unseen;
unfitting;
unformed;
unheard-of;
un-get-at-able), and less freely used in certain other nouns (unrest;
unemployment).
- Middle English un-, on-, Old English; cognate with Dutch on-, Gothic, German un-, Old Norse ū-, ō-; akin to Latin in-, Greek an-, a-. See a-6, an-1, in-3
- a prefix freely used in English to form verbs expressing a reversal of some action or state, or removal, deprivation, release, etc. (unbend;
uncork;
unfasten;
etc.), or to intensify the force of a verb already having such a meaning (unloose).
- Middle English, Old English un-, on-; cognate with Gothic and-, Dutch ont-, German ent-; akin to Latin ante, Greek antí; compare ante-, anti-
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