IPA: /ˈdʒɪərə/
KK: /ˈdʒɪrər/
A person who makes fun of someone or something in a mocking way.
The jeerer shouted insults from the crowd during the performance.
**Jeerer** → It is formed from "jeer" (from Middle English *geren*, meaning to mock or taunt) and "-er" (meaning a person who). A jeerer is a person who mocks or taunts others.
Think of someone who is 'mocking' ('jeer') others — the '-er' just means a person. A jeerer is someone who mocks.