Synonyms to impuissant

feeble, abulic, afraid, aged, ailing, anemic, anile, asthenic, backward, barely audible, blear, bleared, bleary, bloodless, blurred, blurry, cachectic, chicken, confused, cowardly, crabbed, dark, debilitated, decrepit, decrescendo, delicate, dim, dim-witted, distant, dizzy, doddered, doddering, doddery, drained, drooping, droopy, dull, effete, emasculated, enervated, enfeebled, etiolated, exhausted, failing, faint, faint-voiced, fainthearted, faintish, feckless, feebleminded, filmy, flabby, flaccid, flimsy, floppy, foggy, forceless, fossilized, fragile, frail, fuzzy, gentle, gerontal, gerontic, gone, gutless, half-baked, half-heard, half-seen, half-visible, half-witted, hazy, healthless, helpless, ill-defined, imbecile, imperceptible, impotent, in poor health, inadequate, inconclusive, inconspicuous, indefinite, indistinct, indistinguishable, ineffective, ineffectual, infirm, insignificant, insubstantial, insufficient, invalid, invertebrate, lame, languid, languishing, languorous, limber, limp, listless, low, low-profile, lustless, marrowless, merely glimpsed, misty, moribund, moronic, mossbacked, moth-ea