Weakened or worn out from age or wear
Very subtle in difference or distinction.
Lacking physical or emotional strength; delicate:
Not strong or substantial; slight:
The definition of puny is something insufficient in size or strength.
In horse management an unsound horse is one suffering ill-health that affects its suitability for its intended work.
Devoid of sap; dry.
Lacking vigor or effectiveness; inadequate:
in a weak or feeble manner or to a minor degree
Not firm or strong physically; weak; feeble, as from old age
Not solid or heavy; flimsy; light
Containing a considerable percentage of alcohol:
Lacking in vigour or expression.
The definition of flimsy is something which is lacking in strength or thin and easily broken.
Find another word for weakly. In this page you can discover 20 synonyms, antonyms, idiomatic expressions, and related words for weakly, like: decrepit, delicate, fragile, frail, puny, unsound, sapless, feeble, strongly, infirm and insubstantial.