vociferator

English Thesaurus

1. a loud and vehement speaker (usually in protest) (noun.person)

hypernym	:	speaker, talker, utterer, verbaliser, verbalizer,
definition	:	someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous) (noun.person)

derivation	:	shout out, vociferate,
definition	:	utter in a very loud voice (verb.communication)

derivation	:	shout out, vociferate,
definition	:	utter in a very loud voice (verb.communication)