[ uhn ]
/ ən /
one: young uns; He's a bad un.
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Question 1 of 10
Definition for un (2 of 4)
Definition for un (3 of 4)
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).
Origin of un-1
synonym study for un-
Definition for un (4 of 4)
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).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for un (1 of 4)
/ (ən) /
a spelling of one that's a big 'un
usage for 'un
This spelling is intended to reflect a dialectal or informal pronunciation
British Dictionary definitions for un (2 of 4)
British Dictionary definitions for un (3 of 4)
(freely used with adjectives, participles, and their derivative adverbs and nouns: less frequently used with certain other nouns) not; contrary to; opposite ofuncertain; uncomplaining; unemotionally; untidiness; unbelief; unrest; untruth
Word Origin for un-
from Old English on-, un-; related to Gothic on-, German un-, Latin in-
British Dictionary definitions for un (4 of 4)
prefix forming verbs and verbal derivatives
denoting reversal of an action or stateuncover; untangle
denoting removal from, release, or deprivationunharness; unman; unthrone
Word Origin for un-
from Old English un-, on-; related to Gothic and-, German ent-, Latin ante
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for un
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.