IPA: /ˈænsərər/
KK: /ˈænsərər/
A person or thing that provides a response or reply to a question or inquiry.
The answerer provided a detailed explanation to the complex question.
Answerer → It is formed from "answer" (from Old English *andswaru*, meaning a response or reply) and "-er" (meaning a person who). An answerer is a person who provides a response or reply.
Think of someone who gives a 'response' ('answer') — the '-er' just means a person. An answerer is someone who responds.