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English definition of “not say boo”

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not say boo

US informal to say nothing: You didn't say boo to me about going to your mother's this weekend. US ( UK not say boo to a goose) informal to be very nervous and easily frightened
Translations of “not say boo”
in Chinese (Traditional) 甚麽也沒說,一言未發, 非常膽小…
in Chinese (Simplified) 什么也没说,一言未发, 非常胆小…
(Definition of not say boo from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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