| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | stringy, tough |
| Synonyms: | athletic, brawny, fibrous, firm, hard, leathery, muscular, powerful, strong, sturdy, vigorous |
| Main Entry: | sound |
| Part of Speech: | adjective |
| Definition: | complete, healthy |
| Synonyms: | alive and kicking, effectual, entire, firm, fit, flawless, hale, hearty, in the pink, intact, perfect, right, right as rain, robust, safe, sane, solid, stable, sturdy, substantial, thorough, total, unblemished, undamaged, undecayed, unhurt, unimpaired, uninjured, up to snuff, vibrant, vigorous, vital, well, well-constructed, whole, wholesome, wrapped tight |
| Antonyms: | incomplete, infirm, unfit, unhealthy, unsound |
| Main Entry: | stable |
| Part of Speech: | adjective |
| Definition: | constant, fixed; resistant |
| Synonyms: | abiding, anchored, balanced, brick-wall, calm, deep-rooted, durable, enduring, equable, established, even, fast, firm, immutable, invariable, lasting, nailed, perdurable, permanent, poised, reliable, resolute, safe, secure, set, set in stone, solid, solid as a rock, sound, stabile, stalwart, stationary, staunch, staying put, steadfast, steady, stout, strong, sturdy, substantial, sure, together, tough, unalterable, unchangeable, unfluctuating, uniform, unvarying, unwavering, well-built, well-founded |
| Antonyms: | inconstant, shaky, unfixed, unstable, wobbly |
| Main Entry: | stalwart |
| Part of Speech: | adjective |
| Definition: | strong, valiant |
| Synonyms: | athletic, bold, bound, bound and determined, brave, brawny, brick-wall, courageous, daring, dauntless, dead set on, dependable, fearless, forceful, gutsy, hanging tough, hefty, husky, indomitable, intrepid, lusty, muscular, nervy, powerhouse, redoubtable, robust, rugged, sinewy, solid, spunky*, staunch, steamroller, stout, stouthearted, strapping, sturdy, substantial, tenacious, tough, unafraid, undaunted, valorous, vigorous |
| Antonyms: | cowardly, meek, weak |
| Main Entry: | stocky |
| Part of Speech: | adjective |
| Definition: | short and overweight; short and muscular |
| Synonyms: | chunky, corpulent, fat, heavyset, plump, solid, squat, stout, stubby, sturdy, thick, thickset |
| Antonyms: | lanky, skinny, tall, thin, underweight |
| Main Entry: | stout |
| Part of Speech: | adjective |
| Definition: | strong, brawny |
| Synonyms: | able-bodied, athletic, hard, hardy, hulking, husky, indomitable, invincible, lusty, muscular, robust, stable, stalwart, staunch, strapping, sturdy, substantial, tenacious, tough, vigorous |
| Antonyms: | weak |
| Main Entry: | strapping |
| Part of Speech: | adjective |
| Definition: | big and strong |
| Synonyms: | brawny, burly, hefty, hulk, hulking, hunk, husky, ox, powerful, powerhouse, robust, stalwart, stout, sturdy, tall, vigorous, well-built |
| Antonyms: | attenuated, skinny, slight, small, thin |
| Main Entry: | strong |
| Part of Speech: | adjective |
| Definition: | healthy, powerful |
| Synonyms: | able, able-bodied, active, athletic, big, capable, durable, enduring, energetic, firm, fixed, forceful, forcible, hale, hard as nails, hardy, hearty, heavy, heavy-duty, in fine feather, mighty, muscular, reinforced, robust, rugged, secure, sinewy, solid, sound, stable, stalwart, stark, staunch, steady, stout, strapping, sturdy, substantial, tenacious, tough, unyielding, vigorous, well-built, well-founded, well-made |
| Antonyms: | feeble, infirm, unhealthy, unpowerful, weak |
| Main Entry: | substantial |
| Part of Speech: | adjective |
| Definition: | important, ample |
| Synonyms: | abundant, big, big-deal, bulky, consequential, considerable, durable, extraordinary, firm, generous, goodly, heavy, heavyweight, hefty, key, large, major-league, massive, material, meaningful, momentous, plentiful, principal, serious, significant, sizable, solid, sound, stable, steady, stout, strong, sturdy, superabundant, tidy, valuable, vast, weighty, well-built, worthwhile |
| Notes: | substantial means considerable or sizeable; substantive means actual or firm |
| Antonyms: | insignificant, little, minor, small, unimportant, unsubstantial |