Thesaurus

abrasive, alligatored, ambitious, arduous, awkward, baffling, barky, beardown, beefed-up, beefy, big-boned, big-chested, big-shouldered, bouldered, bouldery, brawny, broad-shouldered, broken, buirdly, bullate, bullnecked, bullocky, bumpy, burly, callous, calloused, cast-iron, catchy, challenging, chapped, chesty, clifflike, cliffy, coarse, coarse-textured, corded, costate, cracked, cragged, craggy, crushed, delicate, demanding, difficult, effortful, embarrassing, enured, experienced, experient, fortified, fractious, hard, hard-fought, hardened, hardy, harsh, healthy, heavy-armed, hefty, herculean, hilly, homespun, husky, imbricate, imbricated, industrial-strength, inured, iron, ironlike, irregular, knock-down, knockabout, knockout, knotty, lepidote, leprose, lined, mountainous, muscular, nasty, nonslippery, noticeable, nubbly, nubby, pocked, pockmarked, potholed, powerful, precipitous, problematic, problematical, reinforced, ribbed, robust, rock-ribbed, rockbound, rocky, rough, rough-textured, roughened, roughish, rugged, rugose, sandpapery, saw-like, scabby, scabrous, scaly, scratchy, scurfy, seamed, serious, severe, shagged, shaggy, sinewy, slubbed, squamulose, square-built, square-shouldered, stalwart, sticky, stiff, stony, stout, strapping, strengthened, strong, sturdy, tall, textured, thickened, thorny, ticklish, tight, touchy, tough, toughened, tricky, troublesome, trying, tweedy, twilled, unenviable, uneven, unironed, unpolished, unsmooth, vehement, verrucose, vexed, vigorous, virile, wartlike, warty, weapons-grade, weather-beaten, well-knit, well-set, wrinkled

rugged is a ADJ.