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English definition of “in-”

in-

prefix (before l il-, before b, m or p im-, before r ir-)     /ɪn-/
used to add the meaning 'not', ' lacking ', or 'the opposite of' to adjectives and to words formed from adjectives : incomplete / incompletely illegal / illegally impossible / impossibly irregular / irregularly → Compare dis-, non-, un-Yes, no and not
(Definition of in- prefix from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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