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English definition of “keep sth back”

keep sth back

(NOT TELL) phrasal verb with keep     /kiːp/ verb (kept, kept)
C2 to not tell someone everything you know about a situation or an event that has happened : I suspect she's keeping something back.Secrecy and privacy
(Definition of keep sth back (NOT TELL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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