Definition of UN

 (Entry 1 of 3)

United Nations
\ ˌən, often ˈən, before ˈ- stressed syllable \

Definition of un- (Entry 2 of 3)

1 : not : in-, non- in adjectives formed from adjectivesunambitiousunskilled or participlesundressed , in nouns formed from nounsunavailability , and rarely in verbs formed from verbsunbe sometimes in words that have a meaning that merely negates that of the base word and are thereby distinguished from words that prefix in- or a variant of it (such as im-) to the same base word and have a meaning positively opposite to that of the base wordunartisticunmoral
2 : opposite of : contrary to in adjectives formed from adjectivesunconstitutionalungracefulunmannered or participlesunbelieving and in nouns formed from nounsunrest

Definition of un- (Entry 3 of 3)

1 : do the opposite of : reverse (a specified action) : de- sense 1a, dis- sense 1a in verbs formed from verbsunbendundressunfold
2a : deprive of : remove (a specified thing) from : remove in verbs formed from nounsunfrockunsex
b : release from : free from in verbs formed from nounsunhand
c : remove from : extract from : bring out of in verbs formed from nounsunbosom
d : cause to cease to be in verbs formed from nounsunman
3 : completely unloose

History and Etymology for UN

Prefix (1)

Middle English, from Old English; akin to Old High German un- un-, Latin in-, Greek a-, an-, Old English ne not — more at no

Prefix (2)

Middle English, from Old English un-, on-, alteration of and- against — more at ante-

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Cite this Entry

“UN.” Dictionary, Merriam-Webster, Accessed 31 Oct. 2020.

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Kids Definition of UN

United Nations


\ ˌən, ˈən \

Kids Definition of un-

 (Entry 1 of 3)

1 : not : in-, non- unskilled
2 : opposite of : contrary to unconstitutional



Kids Definition of un- (Entry 2 of 3)

1 : do the opposite of : de-, dis- undress
2 : remove a specified thing from or free or release from unleash
3 : completely unloose



Legal Definition of un-

1 : not uncounseled
2 : contrary to unconstitutional

More from Merriam-Webster on UN

Nglish: Translation of UN for Spanish Speakers

Britannica English: Translation of UN for Arabic Speakers

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