Spartan, Abstruse, Arduous, Astringent, Austere, Authoritarian, Beefy, Bitter, Bold, Bouncing, Brawny, Broken, Brutal, Bulky, Bumpy, Burdensome, Burly, Churlish, Clownish, Rude, Rumpled, Sawtooth, Serrate, Serrated, Severe, Snagged, Solid, Sound, Spiny, Stable, Stalwart, Steady, Steely, Steep, Stern, Stony, Stout, Strapping, Strenuous, Strict, Stringent, Strong, Sturdy, Thorny, Ticklish, Tough, Tricky, Uncouth, Uncultured, Uneven, Ungraceful, Unpolished, Unrefined, Unsmooth, Unyielding, Uphill, Vigorous, Vital, Wicked, Wrinkled, Wrinkly, Complex, Corrugated, Craggy, Creased, Crimped, Crinkled, Crinkly, Critical, Crude, Crumpled, Delicate, Demanding, Dense, Difficult, Doughty, Dour, Dry, Durable, Enduring, Exacting, Exigent, Firm, Flush, Forceful, Forcible, Formidable, Furrowed, Grating, Gravelly, Grim, Gutsy, Hairy, Hale, Hard, Hardy, Harsh, Hearty, Heavy, Hefty, Hoarse, Husky, Inclement, Independent, Individualistic, Intemperate, Intricate, Irregular, Jagged, Jarring, Knitted, Knotted, Knotty, Laborious, Lasting, Loutish, Lumpish, Lusty, Massive, Mean, Meticulous, Mighty, Muscular, Nervy, Obstinate, Onerous, Pitted, Potent, Powerful, Puissant, Pursed, Ragged, Rasping, Raucous, Ridged, Rigorous, Rippled, Robust, Rocky, Rough