IPA: //ˈfriːbuːtə//
KK: /ˈfribʊtər/
A person who steals or takes things by force, often in a violent or illegal way, especially at sea.
The freebooter sailed the seas, searching for ships to plunder.
Freebooter → It is formed from "free" (from Old English "freo", meaning not in bondage) and "booter" (from Dutch "boete", meaning to plunder or loot). The word refers to someone who takes advantage of freedom to engage in piracy or plundering.
Think of someone who is 'not in bondage' ('free') and who 'plunders' ('booter') — that's why a freebooter is someone who takes advantage of their freedom to loot.
No commonly confused words.