Synonyms of decrepit

1 Syllable
frail, weak, worn, old, used
2 Syllables
ragtag, shabby, eldest, scrubby, unfirm, mangier, feebler, flimsier, aged, seedier, beat-up, tired, tacky, crippled, feeblest, shabbier, potest, musty, run-down, frailer, mangy, flimsy, haggard, worn-out, oldish, weakly, shaking, mustier, strengthless, unsound, curer, poter, creaky, weakest, dotard, seedy, frailest, tatty, scrubbier, wasted, feeble, unfit, weaker, infirm
3 Syllables
tottering, unbacked, dogeared, rachitic, dog-eared, tumble-down, disabled, untended, fragile, battered, quavering, broken-down, bedraggled, doddering, senile, rickety, moth-eaten, gray-haired, threadbare, effete, senescent, anile, ramshackle, geriatric, disrepair
4 Syllables
down-at-the-heel, uncared-for, weather-beaten, antiquated, ill-equipped, insubstantial
5 Syllables
superannuated, out-of-commission, dilapidated, debilitated
6 Syllables
incapacitated