have a screw loose Definition in the Cambridge English Dictionary
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Definition of “have a screw loose” - English Dictionary

Definition of "have a screw loose" - American English Dictionary

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have a screw loose

infml to ​seemcrazy: Her ​brotherdefinitely has a ​screwloose – I don't really ​trust him.
(Definition of have a screw loose from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "have a screw loose" - British English Dictionary

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have a screw loose

informal If you say that someone has a screw ​loose, you ​mean that they ​behave in a ​strange way and ​seemslightlymentallyill.
(Definition of have a screw loose from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
Translations of “have a screw loose”
in Chinese (Simplified) 行为乖戾, 神经有点儿不正常…
in Chinese (Traditional) 行爲乖戾, 神經有點不正常…
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