robust Antonyms

frail poorly tasteless thin unfit unpowerful unsound unwell valetudinary washable strengthless soft refined rickety sallowish sapless sick sickened sickish sickly sinewless watery weak sick as a dog unhardened at Death's door as sick as a dog not healthy weak as a baby as sick as a parrot as weak as a baby as weak as a kitten out of sorts sick call weakened unhealthy run down under the weather rheumatoid airsick carsick black-and-blue malnourished seriously ill afflicted disabled diseased dissuasive dull effete