Synonyms for raider

noun

1. A person who makes raids

   bandit, thief, robber, plunderer, looter, pillager, rifler, assaulter, highwayman, brigand, privateer, invader, commando, guerrilla, cavalryman, marauder, hijacker, cattle lifter, rustler, predator, wrecker, depredator, pirate, freebooter, holdup man, sharper, pilferer, poacher, viking, bushranger, spoiler, corsair, filibuster, picaroon, filcher, buccaneer, despoiler, sacker, abductor; see also criminal, pirate, robber.

2. A vessel engaged in raiding

   privateer, pirate ship, brigantine, corsair, submarine, U-boat, mosquito boat, torpedo boat; see also ship.