Synonyms of robber

1 Syllable
thug, cheat, owl, fraud, crook, punk, thief
2 Syllables
outlaw, ex-con, brigand, mugger, fence, rascals, heister, burglar, bandit, grafter, lifter, burglars, looter, filcher, lurkers, footpad, corsair, stickup, varmint, swindler, grafters, cardsharp, prowlers, gangsters, gangster, picklock, sneakthief, raider, crooking, rustler, lifters, rascal, stealer, prowler, stealers, filchers, corsairs, lurker
3 Syllables
freebooters, embezzler, shoplifter, gunslinger, cardsharper, pickpocket, larcenists, chiseler, plunderer, buccaneer, hijacker, banditti, moonlighter, pilferer, forager, purloiner, outlawing, freebooter, marauder, hijackers, skyjacker, despoiler, pillager, marauders, pirate, midnighter, porch-climber, sandbagger, midnighters, skyjackers, embezzlers
4 Syllables
safecracker, defalcator, housebreaker, highwayperson, desperado, operator, housebreakers