let sb in on sth definition, meaning - what is let sb in on sth in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “let sb in on sth”

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let sb in on sth

phrasal verb with let uk   us   /let/ verb (present participle letting, past tense and past participle let)
to tell someone about something that is secret, or to allow someone to become involved in something that only very few people are involved in: Debbie agreed to let me in on her plans.
(Definition of let sb in on sth from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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