THESAURUS
Robust
able-bodied, active, acute, aggressive, animated, athletic, beefy, booming, bouncing, brawny, brisk, doughty, dynamic, energetic, enterprising, enthusiastic, fit, flavorful, flush, forceful, forcible, forcy, fruity, full of pep, full-blooded, full-bodied, full-strength, go-go, gutsy, gutty, hale, hale and hearty, hard, hard as nails, hardy, healthy, hearty, hefty, husky, impetuous, incisive, intense, iron-hard, keen, kinetic, lively, living, lusty, mettlesome, mighty, muscular, nervy, nutty, obstinate, peppy, potent, powerful, prospering, prosperous, puissant, pungent, red-blooded, rich, roaring, robustious, robustuous, rude, rugged, sapid, sinewy, smacking, snappy, sound, spanking, spirited, stalwart, staunch, steely, stout, strapping, strenuous, strong, strong as brandy, strong as strong, strong-willed, sturdy, take-charge, take-over, thrifty, thriving, tough, trenchant, vibrant, vigorous, vital, vivacious, vivid, well-knit, zestful, zesty, zip, zippy
ROGET THESAURUS
Robust
Health
N
health, sanity, soundness, vigor, good health, perfect health, excellent health, rude health, robust health, bloom, mens sana in corpore sano, Hygeia, incorruption, incorruptibility, good state of health, clean bill of health, eupepsia, euphoria, euphory, St. Anthony's fire, healthy, healthful, in health, well, sound, hearty, hale, fresh, green, whole, florid, flush, hardy, stanch, staunch, brave, robust, vigorous, weatherproof, unscathed, uninjured, unmaimed, unmarred, untainted, sound of wind and limb, safe and sound, on one's legs, sound as a roach, sound as a bell, fresh as a daisy, fresh as a rose, fresh as April, hearty as a buck, in fine feather, in high feather, in good case, in full bloom, pretty bobbish, tolerably well, as well as can be expected, sanitary sanatory, health that snuffs the morning air, non est vivere sed valere vita.
Strength
N
strength, power, energy, vigor, force, main force, physical force, brute force, spring, elasticity, tone, tension, tonicity, stoutness, lustihood, stamina, nerve, muscle, sinew, thews and sinews, physique, pith, pithiness, virtility, vitality, athletics, athleticism, gymnastics, feats of strength, adamant, steel, iron, oak, heart of oak, iron grip, grit, bone, athlete, gymnast, acrobat, superman, Atlas, Hercules, Antaeus, Samson, Cyclops, Goliath, tower of strength, giant refreshed, strengthening, invigoration, refreshment, refocillation, dynamics, statics, strong, mighty, vigorous, forcible, hard, adamantine, stout, robust, sturdy, hardy, powerful, potent, puissant, valid, resistless, irresistible, invincible, proof against, impregnable, unconquerable, indomitable, dominating, inextinguishable, unquenchable, incontestable, more than a match for, overpowering, overwhelming, all powerful, all sufficient, sovereign, able-bodied, athletic, Herculean, Cyclopean, Atlantean, muscular, brawny, wiry, well-knit, broad-shouldered, sinewy, strapping, stalwart, gigantic, manly, man-like, manful, masculine, male, virile, unweakened, unallayed, unwithered, unshaken, unworn, unexhausted, in full force, in full swing, in the plenitude of power, stubborn, thick-ribbed, made of iron, deep-rooted, strong as a lion, strong as a horse, strong as an ox, strong as brandy, sound as a roach, in fine feather, in high feather, built like a brick shithouse, like a giant refreshed, strongly, by force, by main force, our withers are unwrung, Blut und Eisen, coelitus mihi vires, du fort au diable, en habiles gens, ex vi termini, flecti non frangi, he that wrestles with us strengthens our nerves an, inflexible in faith invincible in arms.