tough

n.

[1]	street fighter
[2]	hood , hoodlum , goon , punk , thug , toughie , strong-armer
[3]	bully , hooligan , ruffian , roughneck , rowdy , yob , yobo , yobbo
[4]	bruiser , hooligan , bully (boy) , rowdy , thug , ruffian , (Colloq) roughneck , bruiser , tough guy , gorilla

interj.

[1]	(Colloq) Too bad , Tough luck , Hard luck , (Brit) Hard cheese , (Slang) Tough titty , (Colloq) (Slang) Tough shit

adj.

[1]	hard , firm , durable , long-lasting , wear-resistant , substantial , strong , stout , rugged , sturdy , sound , well-built
[2]	stiff , hard , leathery , inflexible , chewy , fibrous , cartilaginous , sinewy , ropy , wiry , stringy
[3]	strong , stalwart , brawny , burly , muscular , powerful , virile , manly , sturdy , doughty , intrepid , stout , rough , vigorous , strapping , athletic
[4]	difficult , demanding , exacting , hard , troublesome , laborious , taxing , strenuous
[5]	baffling , rugged , thorny , puzzling , perplexing , mystifying , knotty , irksome , difficult
[6]	stubborn , toughened , hardened , inured , obstinate , obdurate , hard , harsh , severe , stern , inflexible , refractory , intractable , adamant , unyielding , ungiving , rigid , unbending , unsentimental , unfeeling , unsympathetic , callous , hard-boiled , uncaring , cold , cool , icy , stony , (Colloq) hard-nosed
[7]	sturdy
[8]	ruffianly
[9]	bad
[10]	hard
[11]	baffling , elusive , knotty , problematic , problematical