let sb in on sth Meaning in the Cambridge English Dictionary Cambridge dictionaries logo
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Meaning of “let sb in on sth” in the English Dictionary

"let sb in on sth" in British English

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let sb in on sth

phrasal verb with let uk   /let/  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 ​becomeinvolved 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 Learner’s Dictionary & Thesaurus © Cambridge University Press)
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