Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

futility; ineptitude, inaptitude; unsubservience†; inadequacy &c (insufficiency) 640; inefficiency, &c (incompetence) 158; unskillfulness &c 699; disservice; unfruitfulness &c (unproductiveness).. 169; labor in vain, labor lost, labor of Sisyphus; lost trouble, lost labor; work of Penelope; sleeveless errand, wild goose chase, mere farce. tautology &c (repetition) 104; supererogation &c (redundancy) 641. vanitas vanitatum [Lat.], vanity, inanity, worthlessness, nugacity†; triviality &c (unimportance) 643. caput mortuum [Lat.], waste paper, dead letter; blunt tool. litter, rubbish, junk, lumber, odds and ends, cast-off clothes; button top; shoddy; rags, orts†, trash, refuse, sweepings, scourings, offscourings†, waste, rubble, debris, detritus; stubble, leavings; broken meat; dregs &c (dirt) 653; weeds, tares; rubbish heap, dust hole; rudera†, deads†. fruges consumere natus [Lat.] [Horace]. &c (drone) 683 V. be useless &c adj.; go a begging &c (redundant) 641; fail &c 732. seek after impossibilities, strive after impossibilities; use vain efforts, labor in vain, roll the stone of Sisyphus, beat the air, lash the waves, battre l'eau avec un baton [Fr.], donner un coup d'epee dans l'eau [Fr.], fish in the air, milk the ram, drop a bucket into an empty well, sow the sand; bay the moon; preach to the winds, speak to the winds; whistle jigs to a milestone; kick against the pricks, se battre contre des moulins [Fr.]; lock the stable door when the steed is stolen, lock the barn door after the horse is stolen &c (too late) 135; hold a farthing candle to the sun; cast pearls before swine &c (waste) 638; carry coals to Newcastle &c (redundancy) 641; wash a blackamoor white &c (impossible) 471. render useless &c adj.; dismantle, dismast, dismount, disqualify, disable; unrig; cripple, lame &c (injure) 659; spike guns, clip the wings; put out of gear. Adj. useless, inutile, inefficacious, futile, unavailing, bootless; inoperative &c 158; inadequate &c (insufficient) 640; inservient†, unsubservient; inept, inefficient &c (impotent) 158; of no avail &c (use) 644; ineffectual &c (failure) 732; incompetent &c (unskillful) 699; stale, flat and unprofitable; superfluous &c (redundant) 641; dispensable; thrown away &c (wasted) 638; abortive &c (immature) 674. worthless, valueless, priceless; unsalable; not worth a straw &c (trifling) 643, dear at any price. vain, empty, inane; gainless†, profitless, fruitless; unserviceable, unprofitable; ill-spent; unproductive &c 169; hors de combat [Fr.]; effete, past work &c (impaired) 659; obsolete &c (old) 124; fit for the dust hole; good for nothing; of no earthly use; not worth having, not worth powder and shot; leading to no end, uncalled for; unnecessary, unneeded. Adv. uselessly &c adj.; to little purpose, to no purpose, to little or no purpose. Int. cui bono? [Lat.]; what's the good!, Phr. actum ne agas [Lat.]; chercher une aiguille dans une botte de foin [Fr.]; tanto buon che val niente [It].