IPA: /prəˈvoʊkər/
KK: /prəˈvoʊkər/
A person who causes someone to feel a strong emotion, often anger or annoyance.
He was known as a provoker, always stirring up trouble among his friends.
Provoker → It is formed from "pro-" (meaning forward) and "vocare" (meaning to call). The word "provoker" refers to someone who calls forth or incites a reaction or response.
Think of someone who 'calls' ('vocare') something 'forward' ('pro-') — that's why a provoker is someone who incites or brings about a reaction.