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English definition of “unofficial”

unofficial

adjective     /ˌʌn.əˈfɪʃ.əl/
not official; not from a person in authority, the government, etc.: unofficial estimates/figures/reportsUncertaintyHesitatingAchievable unofficially     /-i/ adverb
(Definition of unofficial adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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