- tough
- adj1. strong, durable, firm, hard, rigid, solid; resisting, resistant, lasting, enduring; substantial, sound, well-built.2. leathery, chewy, gristly, coriaceous; stringy, cartilaginous, fibrous, sinewy, wiry, ropy.3. brawny, muscular, musclebound, athletic, strapping, thickset, burly; robust, vigorous, virile, lusty, manly; powerful, Literary. puissant, herculean, Atlan-tean.4. sturdy, hardy, hearty, stout, seasoned; rugged, stalwart, rigorous, Inf. hard as nails; doughty, plucky, mettlesome, Inf. gritty, intrepid, Inf. nervy.5. unyielding, obdurate, obstinate, stubborn, inflexible, mulish; rigid, stiff-necked, stony, stern, passionless, unfeeling; unsentimental, unsympathetic, hard-boiled, Sl. hard-nosed, two-fisted; callous, icy, cold, cool.6. hard, difficult, formidable, unfathomable, insoluble; arduous, laborious, uphill, exacting; troublesome, irksome, thorny, knotty, crabbed; baffling, trying, puzzling, ticklish; perplexing, involved, intricate, complicated.7. vigorous, severe, violent, intense, keen, acute; grave, serious, dire, dreadful; furious, ferocious, fierce, wild, heavy, woolly, rigorous, raging, frantic, frenzied.8.U.S. rough, vicious, rowdyish; unruly, rambunctious, disorderly, refractory; boisterous, riotous, noisy, uproarious.n9.U.S. ruffian, rowdy, roughneck, Inf. hard guy, Inf. tough guy; Inf. toughie, bully, animal, gorilla; hoodlum, thug, hooligan
A Note on the Style of the synonym finder. 2014.