Belligerent, Berserk, Blade, Bomber, Bony, Boss, Bravo, Brawler, Brawny, Bruiser, Brutal, Brute, Bulky, Bully, Burdensome, Burly, Callous, Cement, Chewy, Chronic, Clammy, Clotted, Coagulated, Cohesive, Cold, Colossus, Combatant, Competitor, Complex, Complicated, Concrete, Confirmed, Constant, Contender, Contestant, Continuing, Cool, Cramp, Critical, Crushing, Curdled, Cutting, Dandy, Delicate, Delicious, Demanding, Demon, Dense, Devil, Difficult, Disputant, Doughty, Dour, Dragon, Drastic, Durable, Enduring, Enforcer, Evergreen, Exacting, Excessive, Exigent, Exorbitant, Extravagant, Extreme, Fab, Fencer, Fibrous, Fiend, Fierce, Fighter, Firebrand, Firm, Fixed, Flinty, Forced, Formidable, Furious, Macrobiotic, Madcap, Manly, Marble, Massive, Mean, Meticulous, Militant, Monster, Mug, Mugger, Muscular, Mystifying, Narrow, Neat, Nervy, Nifty, Obdurate, Obfuscated, Obscure, Obscured, Obstinate, Okay, Onerous, Oppressive, Outrageous, Painful, Pasty, Peachy, Perennial, Permanent, Perpetual, Perplexed, Perplexing, Persistent, Persisting, Pertinacious, Piercing, Plucky, Powerful, Powerhouse, Punishing, Punk, Puzzling, Rapist, Refractory, Remaining, Resistant, Resistive, Resolute, Revolutionary, Rigid, Rigorous, Rioter, Ripping, Rival, Rocky, Rough, Rowdy, Ruffian, Rugged, Rum, Savage, Scrambled, Severe, Sharp, Sinewy, Slimy, Slithery, Smashing, Solid, Sound, Wiry, Witch, Withstanding, Wizard, Wolf, Wrangler, Atlas, Cyclops, Goliath, Ok, Spartan, Superman, Tarzan, Titan, Abiding, Abstruse, Acute, Adamant, Adherent, Adhesive, Aged, Ancient, Antique, Arbitrary, Arduous, Astringent, Athletic, Austere, Authoritarian, Bad, Baffling, Battler, Beast, Fury, Game, Gamy, Garbled, Gear, Gelatinous, Giant, Gladiator, Gluey, Glutinous, Gooey, Goon, Gorilla, Granitic, Great, Grim, Gritty, Groovy, Grueling, Gun, Gutsy, Hairy, Hard, Hardened, Hardhearted, Hardy, Harsh, Heavy, Hefty, Hood, Hoodlum, Hooligan, Horny, Hot, Icy, Immoderate, Immutable, Incendiary, Inflexible, Intemperate, Intense, Intractable, Intrepid, Intricate, Inured, Inveterate, Irksome, Jellied, Jouster, Jumbled, Keen, Killer, Killing, Knight, Knotted, Knotty, Laborious, Lasting, Leathery, Spiny, Spirited, Spitfire, Splitting, Spunky, Stable, Stalwart, Starchy, Staying, Steadfast, Steady, Steely, Steep, Stern, Sticky, Stiff, Stodgy, Stony, Stout, Strained, Strapping, Strenuous, Strict, Stringent, Stringy, Strong, Stubborn, Stunning, Sturdy, Substantial, Swell, Sword, Swordsman, Syrupy, Tacky, Taut, Taxing, Tenacious, Terror, Terrorist, Thick, Thickened, Thorny, Thug, Ticklish, Tiger, Tigress, Torpedo, Tricky, Troublesome, Unalterable, Unbending, Unbreakable, Uncaring, Uncompromising, Unconscionable, Underprivileged, Unfeeling, Unsentimental, Unsympathetic, Untiring, Unyielding, Uphill, Vehement, Venomous, Vigorous, Violent, Virago, Virile, Virulent, Viscose, Viscous, Vital, Vixen, Wearisome, Wicked