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English definition of “keep sb at arm's length”

keep sb at arm's length

C2 to not allow someone to become too friendly with you: I always had the feeling she was keeping me at arm's length.Preventing and impedingLimiting and restricting
(Definition of keep sb at arm's length from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “keep sb at arm's length”

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to press something quickly and quite hard between two objects, especially sharp objects such as teeth or nails

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