Tough

strong hard solid tough as nails durable firm robust vigorous resilient healthy conditioned fit hardened resistant brawny stout rugged hardy stalwart mighty tenacious unyielding inflexible rigid sinewy cohesive dense strapping seasoned steeled tight unbreakable fibrous flinty withstanding leathery lusty molded hard-bitten indigestible stiff

stubborn firm hard fixed severe harsh strict inflexible cruel violent adamant unyielding immovable intractable resolute uncompromising obdurate callous headstrong unbending terrible fierce desperate immutable unalterable unforgiving pugnacious vicious savage drastic hard-line hard-nosed hard-shelled hard-boiled hard-bitten ruffianly merciless unmanageable uncontrollable stiff taut narrow exacting confirmed ferocious refractory arbitrary

hard heavy demanding taxing severe trying exhausting burdensome onerous strenuous laborious troublesome exacting grievous intricate perplexing puzzling baffling knotty thorny stiff unyielding intractable resisting effortful toilsome labored uphill backbreaking weighty exigent irksome mean hairy handful no piece of cake wicked

bully thug villain criminal gangster hooligan hoodlum punk rough rowdy ruffian brute bruiser goon hood roughneck

robust hard hard-bitten sound hard-handed toughened hardy capable rugged

heavy bad arduous backbreaking burdensome demanding difficult effortful exacting unfortunate exigent formidable hard laborious onerous oppressive rigorous rough severe untimely taxing trying weighty

savage fierce knockabout desperate ferocious rough ruffianly uproarious terrible rough-and-tumble rapacious riotous rugged uncontrollable unmanageable strenuous

constant determined firm resolute steadfast steady stiff unbending uncompromising unflinching unwavering unyielding