boo

1. V-T/V-I If you boo a speaker or performer, you shout "boo" or make other loud sounds to indicate that you do not like them, their opinions, or their performance. 發出噓聲 (以示不滿)

People were booing and throwing things at them. 人們發出噓聲，竝朝他們扔東西。

Demonstrators booed and jeered him. 示威者發出噓聲嘲笑他。

2. N-COUNT Boo is also a noun. 噓聲

She was greeted with boos and hisses. 迎接她的是一片喝倒彩的噓聲。

3. booingN-UNCOUNT 發出噓聲

The fans are entitled to their opinion but booing doesn't help anyone. 狂熱愛好者們有權表達自己的看法，但發出噓聲對任何人都沒有好処。

4. INTERJ You say "Boo!" loudly and suddenly when you want to surprise someone who does not know that you are there. 爲嚇唬人而發出的聲音