Noun

• S: (n) blare, blaring, cacophony, clamor, din (a loud harsh or strident noise)
• S: (n) clamor, clamoring, clamour, clamouring, hue and cry (loud and persistent outcry from many people) "he ignored the clamor of the crowd"

Verb

• S: (v) clamor, clamour (make loud demands) "he clamored for justice and tolerance"
• S: (v) clamor, clamour (utter or proclaim insistently and noisily) "The delegates clamored their disappointment"
• S: (v) clamor (compel someone to do something by insistent clamoring) "They clamored the mayor into building a new park"