hiss

Universal Words verb, noun verb 1 [V] ~ (at sb/sth) to make a sound like a long 's': The steam escaped with a loud hissing noise. * The snake lifted its head and hissed. 2 to make a sound like a long 's' to show disapproval of sb/sth, especially an actor or a speaker: [VN] He was booed and hissed off the stage. [also V] 3 ~ (at sb) to say sth in a quiet angry voice: [V] He hissed at them to be quiet. * [Vspeech] 'Leave me alone!' she hissed. noun a sound like a long 's'; this sound used to show disapproval of sb: the hiss of the air brakes * the snake's hiss * The performance was met with boos and hisses.