noun

a loud and confused noise, especially that of people shouting.

the questions rose to a clamour

din,racket,loud noise,uproar,tumult,babel,shouting,yelling,screaming,baying,roaring,blaring,clangour,commotion,brouhaha,hue and cry,hubbub,bedlam,pandemonium,stramash,hullabaloo,rumpus,row,vociferation,ululation,charivari

verb

(of a group of people) shout loudly and insistently.

the surging crowds clamoured for attention

yell,shout loudly,bay,scream,shriek,roar