Weakly

Definition:

(adv.) In a weak manner; with little strength or vigor; feebly.
(superl.) Not strong of constitution; infirm; feeble; as, a weakly woman; a man of a weakly constitution.

Compare weakly with other words:

weakly vs. weekly

vigorously vs. weakly

loosely vs. weakly

feebly vs. weakly

frailly vs. weakly

force vs. weakly

weak vs. weakly

strength vs. weakly

delicate vs. weakly

constitution vs. weakly

sickly vs. weakly

strong vs. weakly