hefty

1 having great weight that's a pretty hefty book bag for a tiny person like you Synonyms heavy, massive, ponderous, weightyRelated Words burdensome, leaden, lumpish; bulky, elephantine, massy, outsize (also outsized), voluminous; overweight, top-heavy; solid, substantial; ultraheavyNear Antonyms airy, ethereal, feathery, fluffy, gossamer, gossamery; flimsy, insubstantial, slight; lightweight, undersized (also undersize), underweight; ultralight, ultralightweightAntonyms light, weightless

2 of a size greater than average of its kind received a hefty donation from the local business association for holiday lights along Main Street Synonyms big, biggish, boxcar, bulky, considerable, goodly, grand, great, handsome, large, hulking, husky, largish, outsize (also outsized), oversize (or oversized), sizable (or sizeable), substantial, tidy, voluminousRelated Words astronomical (also astronomic), Brobdingnagian, bumper, Bunyanesque, cavernous, colossal, cosmic (also cosmical), cyclopean, elephantine, enormous, galactic, gargantuan, gigantic, gross, hellacious, herculean, heroic (also heroical), Himalayan, huge, humongous (also humungous), immense, jumbo, king-size (or king-sized), leviathan, major, mammoth, massive, monolithic, monstrous, monumental, mountainous, pharaonic, prodigious, staggering, stupendous, super, super-duper, supersized, titanic, tremendous, vast, vasty, walloping, whacking, whopping; excessive, exorbitant, extravagant, extreme, immoderate, inordinate; abundant, ample, appreciable, copious, plentiful; fat, thick; capacious, commodious, roomy, spaciousNear Antonyms diminutive, half-pint, infinitesimal, Lilliputian, little-bitty, microminiature, microscopic (also microscopical), mini, miniature, minuscule, minute, pint-size (or pint-sized), pocket-size (also pocket-sized), pygmy, teensy, teensy-weensy, teeny, teeny-weeny, tiny, wee; petite, slender, slight, slim, thinAntonyms bantam, dinky, dwarf, dwarfish, little, puny, shrimpy, small, smallish, undersized (also undersize)

3 strongly and heavily built hefty since childhood, he became a champion wrestler Synonyms beefy, brawny, burly, husky, hulking, mesomorphicRelated Words able-bodied, athletic, herculean, mighty, muscle-bound, muscular, powerful, robust, rugged, sinewy, stalwart, stout, strapping, strong, sturdy; chunky, compact, heavy, heavyset, solid, squat, squatty, stocky, thickset; chubby, dumpy, lumpish, podgy [chiefly British], portly, pudgy, roly-poly, tubbyNear Antonyms lean, light, lightweight, slender, slight, slim, svelte, sylphlike, thin, willowy; bony (also boney), gangling, gangly, gaunt, gawky, lanky, reedy, scraggy, scrawny, skinny, spare, stringy, twiggy, waspish, weedy; spidery, wiry; debilitated, delicate, effete, emaciated, enervated, enfeebled, feeble, fragile, frail, infirm, puny, unathletic, weak, weakly, wimpy