A person who shouts approval or acclaims something; one who participates in acclamation.
From Latin 'acclamator,' the agent noun derived from 'acclamare.' The '-or' suffix indicates a person who performs the action of acclaiming.
This word is practically extinct in English because we stopped needing a special word for 'someone who cheers'—but it perfectly captures the ancient Roman audience member shouting approval in the forum!
Complete word intelligence in one call. Free tier — 50 lookups/day.