WordWeb Online

1. Make loud demands
   "he clamoured for justice and tolerance"
   - clamor [US]
    
2. Utter or proclaim insistently and noisily
   "The delegates clamoured their disappointment"
   - clamor [US]
    
3. Compel someone to do something by insistent clamouring
   "They clamoured the mayor into building a new park"
   - clamor [US]

1. A loud harsh or strident noise
   - blare, blaring, cacophony, clamor [US], din
    
2. Loud and persistent outcry from many people
   "he ignored the clamour of the crowd"
   - clamor [US], clamoring [US], clamouring [Brit, Cdn], hue and cry

Derived forms: clamoured, clamouring, clamours

Type of: call, compel, cry, demand, express, give tongue to, noise, obligate, oblige, outcry, shout, utter, verbalise [Brit], verbalize, vociferation, yell