Part of speech: Noun
loud and persistent outcry from many people
Example: he ignored the clamor of the crowd
Part of speech: Verb
make loud demands
Example: he clamored for justice and tolerance
Part of speech: Verb
utter or proclaim insistently and noisily
Example: The delegates clamored their disappointment
Clamoring, Clamour, Clamor, Clamouring, Hue and cry
The word "clamour" comes from Latin clāmor.
Latin's grammatical structure influenced how English speakers think about verb tenses and cases.