Synonyms of infirm

1 Syllable

ill, limp, frail, weak, lame, faint, shrimp, old, sick, slack

2 Syllables

eldest, sicker, laid-low, sickish, feebler, flimsier, sickly, ailing, feeblest, shrimper, frailer, languid, sickest, wornout, limper, flimsy, failing, laid-up, shaky, oldish, wobbly, halting, strengthless, punier, puny, unsound, weakest, dotard, shakiest, frailest, snoozy, unwell, shakier, half-pint, feeble, helpless, weaker

3 Syllables

aquake, ashake, unbacked, rachitic, decrepit, disabled, unhealthy, enfeebled, powerless, fragile, basket-case, broken-down, unstable, diseased, impotent, doddering, senile, rickety, gray-haired, languorous, sleepyhead, senescent, bedridden, anile, anemic, lymphatic, sensile, faltering, geriatric, wavering

4 Syllables

jellylike, delicate, unsubstantial, indisposed, on-the-fence, out-of-action, insecure, insubstantial, vacillating, sidelined

5 Syllables

out-of-commission, hospitalized, irresolute, disenfranchised, debilitated

6 Syllables

incapacitated