A person who clamors; someone who makes loud demands or complaints persistently.
From 'clamor' plus the agent suffix '-er' (one who does). English uses this productive suffix to create nouns from verbs across all registers and time periods.
History is shaped by clamors—civil rights movements succeed not through quiet petition but through the persistent noise of clamorous crowds, which is why silencing protesters has always been a goal of suppression.
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