KO, abulic, achromatic, achromic, afraid, ailing, anemic, ashen, ashy, asthenic, bad, balmy, barely audible, below par, black out, blackout, bland, blear, bleared, bleary, bled white, bloodless, blow, blurred, blurry, break, break down, burn out, cadaverous, catalepsy, catatonia, catatony, cave in, chicken, chloranemic, collapse, colorless, coma, come apart, come unstuck, confused, conk out, cowardly, crack up, crap out, critically ill, crumble, dark, dead, deadly pale, deathly pale, debilitated, decline, decrescendo, dim, dimmed, dingy, discolored, disintegrate, distant, dizziness, dizzy, down, droop, drooping, droopy, drop, dull, dusty, effete, enervated, enfeebled, etiolated, exsanguinated, exsanguine, exsanguineous, fade, faded, fagged, fail, faint-voiced, fainthearted, fainting, faintish, fall senseless, fallow, faltering, fatigue, fatigued, feeble, feebleminded, feeling awful, feeling faint, feeling something terrible, filmy, fizzle out, flabby, flaccid, flag, flagging, flat, flickering, floppy, foggy, footsore, frail, frazzled, fuzzy, gasp, gentle, get tired, ghastly, giddy, give out, give way, go downhill, go soft, go to pieces, gone, good and tired, gray, gray out, grayout, grow weary, gutless, haggard, half-heard, half-seen, half-visible, hazy, hit the skids, hueless, hushed, hypochromic, ill-defined, ill, imbecile, imperceptible, impotent, in danger, inaudible, inconspicuous, indefinite, indiscernible, indisposed, indistinct, indistinguishable, infirm, invertebrate, jade, jaded, kayo, keel over, knockout, lackluster, laid low, languid, languish, languorous, leaden, lenient, light-headed, limber, limp, lipothymia, lipothymy, listless, livid, low-profile, low, lurid, lusterless, lustless, marrowless, mat, mealy, merely glimpsed, mild, misty, mortally ill, muddy, muffled, murmured, muted, muzzy, nerveless, neutral, nirvana, nirvana principle, not quite right, nothingness, oblivion, obliviousness, obscure, off-color, out of focus, out of sorts, pale-faced, pale, pale as death, pallid, pant, pass out, pasty, peg out, peter out, pianissimo, piano, pine, pithless, play out, pliable, poop out, pooped, powerless, puff, puff and blow, ready to drop, rocky, rubbery, run-down, run down, run out, run ragged, sagging, sallow, sapless, scarcely heard, seedy, semiconsciousness, semivisible, senselessness, shadowy, sick, sick unto death, sickish, sickly, sinewless, sink, slack, sleep, slight, small, smooth, soft-sounding, soft-voiced, soft, spineless, stifled, strengthless, stupor, subaudible, subdued, succumb, swim, swoon, syncope, taken ill, tallow-faced, thin, tire, tired-winged, tired, toilworn, toneless, uncertain, unclear, uncolored, unconsciousness, undefined, under the weather, undetermined, unhardened, unnerved, unplain, unrecognizable, unrefreshed, unrestored, unsteady, unstrung, unwell, vague, vertiginous, vertigo, wan, washed-out, wavering, waxen, way-weary, wayworn, weak-kneed, weak-minded, weak-voiced, weak-willed, weak, weaken, weakened, weakly, wear away, wear thin, wearied, weariful, weary-footed, weary-laden, weary-winged, weary-worn, weary, wheeze, whey-faced, whispered, white, wilt, wilting, woozy, worn-down, worn, yield