3[intransitiveI, transitiveT]DISAPPROVE if a crowd hisses a speaker, they interrupt them with angry sounds to show that they do not like them 〔因不满而对演讲人〕发嘘声,(对…)报以嘘声 → boo
He was booed and hissed during a stormy meeting.
他在闹哄哄的会议中被人喝倒彩、发嘘声。
—hiss noun [countableC]
She heard a faint hiss as the metal struck the water.