rowdy

[1]	bully , tough , hooligan , ruffian , roughneck , yob , yobo , yobbo
[2]	ruffian , tough , hooligan , yahoo , brawler , lout , (Brit) lager lout , skinhead , (Mainly US/Canadian) hoodlum , hood , (Slang) (Brit) bovver boy

adj.

[1]	boisterous , uproarious , disorderly , noisy , loud , obstreperous , unruly
[2]	raucous