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English definition of “have bats in the belfry”

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have bats in the belfry

old-fashioned disapproving
to be silly and slightly crazy and behave in a confused way
Translations of “have bats in the belfry”
in Chinese (Traditional) 傻裡傻氣,精神失常…
in Chinese (Simplified) 傻里傻气,精神失常…
(Definition of have bats in the belfry from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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