Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun raider

2 senses of raider

Sense 1
plunderer, pillager, looter, spoiler, despoiler, raider, freebooter -- (someone who takes spoils or plunder (as in war))
       => thief, stealer -- (a criminal who takes property belonging to someone else with the intention of keeping it or selling it)

Sense 2
raider -- (a corporate investor who intends to take over a company by buying a controlling interest in its stock and installing new management)
       => corporate investor -- (a company that invests in (acquires control of) other companies)