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English definition of “un-”


prefix     /ʌn-/
used to add the meaning 'not', ' lacking ', or 'the opposite of' before adjectives , adverbs , verbs , and nouns : unrealistic unhappily unscrew unfairness Yes, no and notLacking thingsScarce, inadequate and not enoughEssential or necessary
(Definition of un- prefix from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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