faintadjective(UNWELL)
Thesaurus: synonyms, antonyms, and examples not physically strong
weakShe was too tired and weak to finish the race.
feebleMany of the pensioners were so feeble they had to be stretchered onto the ship.
punyHe was puny as a child.
weedyUKI was just this weedy guy who always had his head in a book.
frailA frail, grey-haired lady walked slowly down the street.