Weak from exhaustion.

synonym: flagging.

Roget 160: weak, feeble, debile^†; impotent etc. 158; relaxed, unnerved, etc. v.; sapless, strengthless^†, powerless; weakly, unstrung, flaccid, adynamic^†, asthenic^†; nervous.    soft, effeminate, feminate^†, womanly.    frail, fragile, shattery^†; flimsy, unsubstantial, insubstantial, gimcrack, gingerbread; rickety, creaky, creaking, cranky; craichy^†; drooping, tottering etc. v.. broken, lame, withered, shattered, shaken, crazy, shaky; palsied etc. 158; decrepit.    languid, poor, infirm; faint, faintish^†; sickly etc. (disease) 655; dull, slack, evanid^†, spent, short-winded, effete; weather-beaten; decayed, rotten, worn, seedy, languishing, wasted, washy, laid low, pulled down, the worse for wear.    unstrengthened etc. 159^†, unsupported, unaided, unassisted; aidless^†, defenseless etc. 158; cantilevered (support) 215.    on its last legs; weak as a child, weak as a baby, weak as a chicken, weak as a cat, weak as a rat; weak as water, weak as water gruel, weak as gingerbread, weak as milk and water; colorless etc. 429.    ... show more

Roget 655: diseased; ailing etc. v.; ill, ill of; taken ill, seized with; indisposed, unwell, sick, squeamish, poorly, seedy; affected with illness, afflicted with illness; laid up, confined, bedridden, invalided, in hospital, on the sick list; out of health, out of sorts; under the weather [U.S.]; valetudinary^†.    unsound, unhealthy; sickly, morbid, morbose^†, healthless^†, infirm, chlorotic [Med.], unbraced^†.    drooping, flagging, lame, crippled, halting.    morbid, tainted, vitiated, peccant, contaminated, poisoned, tabid^†, mangy, leprous, cankered; rotten, rotten to the core, rotten at the core; withered, palsied, paralytic; dyspeptic; luetic^†, pneumonic, pulmonic [Med.], phthisic^†, rachitic; syntectic^†, syntectical^†; tabetic^†, varicose.    touched in the wind, broken-winded, spavined, gasping; hors de combat etc. (useless) 645 [Fr.].    weakly, weakened etc. (weak) 160; decrepit; decayed etc. (deteriorated) 659; incurable etc. (hopeless) 859; in declining health; cranky; in a bad way, in danger, prostrate; moribund etc. (death) 360.    morbific etc. 657^†; epidemic, endemic; zymotic^†.    ... 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

Hanging down (as from exhaustion or weakness).

synonyms: droopy, sagging.

Having branches or flower heads that bend downward:
— Lilacs with drooping panicles of fragrant flowers.

synonyms: cernuous, nodding, pendulous, weeping.