hiss

1 a sound similar to the speech sound \s\ stretched out the hiss of air escaping from a balloon Synonyms fizz, sizzle, swish, whish, whiz (or whizz) Related Words swoosh, wheeze, whistle, whoosh, zip; sibilance, sibilant

2 a vocal sound made to express scorn or disapproval there was a chorus of boos and hisses from the fans when the umpire called the runner out Synonyms bird [chiefly British], boo, Bronx cheer, catcall, hoot, jeer, raspberry, razz, snortRelated Words smirk, sneer, snicker, snigger; gibe (or jibe), put-down, taunt; whistleNear Antonyms applause, clappingAntonyms cheer