相关单词同义词difficult, strong, hard, rough, firm, varlet, Highbinder, stay, stomach, go, abide, resist, doggedly, pertinaciously, 近义词 hard, leathery, strong反义词weak临近词toughen, touchy, toughy, tougher, toughly, toughie, toughner, toughing, tough on, toughish, tough job, tough out相似词touchscreen, touchstone, touchy, touchy-feely, tough love, tough luck idiom, tough sth out, toughen, 返回 tough