Definition of non- prefix from the Oxford Advanced Learner's Dictionary

  

non-

 prefix
prefix
BrE BrE//nɒn//
 
; NAmE NAmE//nɑːn//
 
 
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(in nouns, adjectives and adverbs) not nonsense non-fiction non-alcoholic non-profit-making non-committally Most compounds with non are written with a hyphen in British English but are written as one word with no hyphen in North American English. More Like This Prefixes a-, ante-, anti-, be-, co-, de-, demi-, dis-, en-, ex-, extra-, hyper-, hypo-, il-, in-, infra-, inter-, intra-, mis-, non-, off-, oft-, out-, over-, para-, post-, pre-, pro-, re-, retro-, semi-, sub-, trans-, ultra-, un-, under-, up-See worksheet. Word Originfrom Latin non ‘not’.
See the Oxford Advanced American Dictionary entry: non-