feeble vs weakly

feeble and weakly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
feeble	No	Yes	No	No
weakly	No	Yes	No	Yes

As adjectives, feeble and weakly are synonyms defined as:

Other synonyms of feeble include debile, decrepit, infirm, rickety, sapless, weak.

feeble (adjective)	weakly (adjective)
lacking bodily or muscular strength or vitality	lacking bodily or muscular strength or vitality
lacking strength
lacking strength or vigor
pathetically lacking in force or effectiveness

feeble (adverb)	weakly (adverb)
	in a weak or feeble manner or to a minor degree