Drained of energy or effectiveness; extremely tired; completely exhausted:
— You look worn out.

synonyms: dog-tired, exhausted, fagged, fatigued, gone, played out, spent, washed-out, worn-out.

Roget 659: unimproved etc. (improve) etc. 658; deteriorated etc. v.; altered, altered for the worse; injured etc. v.; sprung; withering, spoiling etc. v.; on the wane, on the decline; tabid^†; degenerate; marescent^†; worse; the worse for, all the worse for; out of repair, out of tune; imperfect etc. 651; the worse for wear; battered; weathered, weather-beaten; stale, passe, shaken, dilapidated, frayed, faded, wilted, shabby, secondhand, threadbare; worn, worn to a thread, worn to a shadow, worn to the stump, worn to rags; reduced, reduced to a skeleton; far gone; tacky [U.S.].    decayed etc. v.; moth-eaten, worm-eaten; mildewed, rusty, moldy, spotted, seedy, time-worn, moss-grown; discolored; effete, wasted, crumbling, moldering, rotten, cankered, blighted, tainted; depraved etc. (vicious) 945; decrepid^†, decrepit; broke, busted, broken, out of commission, hors de combat [Fr.], out of action, broken down; done, done for, done up; worn out, used up, finished; beyond saving, fit for the dust hole, fit for the wastepaper basket, past work etc. (useless) 645.    at a low ebb, in a bad way, on one's last legs; undermined, deciduous; nodding to its fall etc. (destruction) 162; tottering etc. (dangerous) 665; past cure etc. (hopeless) 859; fatigued etc. 688; retrograde etc. (retrogressive) 283; deleterious etc. 649.    ... show more

Roget 688: fatigued, tired etc. v.; weary etc. 841; drowsy etc. 683; drooping etc. v.; haggard; toilworn^†, wayworn:, footsore, surbated^†, weather-beaten; faint; done up, used up, knocked up; bushed [U.S.]; exhausted, prostrate, spent; overtired, overspent, overfatigued; unrefreshed^†, unrestored.    worn, worn out; battered, shattered, pulled down, seedy, altered.    breathless, windless; short of breath, out of breath, short of wind; blown, puffing and blowing; short-breathed; anhelose^†; broken winded, short-winded; dyspnaeal^†, dyspnaeic^†.    ready to drop, all in, more dead than alive, dog-weary, walked off one's legs, tired to death, on one's last legs, played out, hors de combat [Fr.].    fatiguing etc. v.; tiresome, irksome, wearisome; weary, trying.    ... show more

Roget 841: wearying etc. v.; wearing; wearisome, tiresome, irksome; uninteresting, stupid, bald, devoid of interest, dry, monotonous, dull, arid, tedious, humdrum, mortal, flat; prosy, prosing; slow, soporific, somniferous.    disgusting etc. v.; unenjoyed^†.    weary, tired etc. v.; drowsy etc. (sleepy) 683; uninterested, flagging, used up, worn out, blase, life-weary, weary of life; sick of.    ... show more