IPA: /ˈpɪlɪdʒər/
KK: /ˈpɪlɪdʒər/
A person who steals or takes goods by force, especially during a war or conflict.
The pillager took everything of value from the abandoned village.
Pillager → It is formed from "pillager" (from Old French *piller*, meaning to plunder) and "-er" (meaning a person who). A pillager is a person who plunders or takes goods by force.
Think of someone who 'plunders' ('piller') — the '-er' just means a person. A pillager is someone who takes things by force.