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English definition of “boo”

boo

verb [I/T] (DISAPPROVE)   /bu/ (present tense boos, present participle booing, past tense and past participle booed)
to call out the word "boo" to express disapproval: [T] They booed him off the stage. boo    /bu/ noun [C] (plural boos) Students showed their dislike with a chorus of boos.
(Definition of boo verb (DISAPPROVE) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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