adjective · very difficult; severely testing stamina or resolution“a rugged competitive examination”
adjective · physically toughened“the tough bottoms of his feet”
adjective · substantially made or constructed“sturdy steel shelves”
adjective · violent and lawless“the more ruffianly element”
ruffianly
adjective · feeling physical discomfort or pain (‘tough’ is occasionally used colloquially for ‘bad’)“my throat feels bad”
adjective · unfortunate or hard to bear“had hard luck”
adjective · making great mental demands; hard to comprehend or solve or believe“a baffling problem”
noun · someone who learned to fight in the streets rather than being formally trained in the sport of boxingstreet fighter
noun · an aggressive and violent young criminalnoun · a cruel and brutal fellow