THESAURUS
Lose
be bereaved of, be found wanting, be unsuccessful, bereave, bite the dust, bow, bow to, capitulate, clear, come to grief, consume, decline, default, disinherit, displace, dispossess, dissipate, divest, draw a blank, drop, elude, escape, evade, exhaust, expend, fail, fail of success, fall, flunk, flunk out, forfeit, forget, fritter away, give the slip, give up, go astray from, go bankrupt, go down, go under, have enough, incur loss, kiss good-bye, labor in vain, let slip, lick the dust, lose out, lose sight of, lose the day, mislay, misplace, miss, not come off, not pass, not remember, not work, oust, part with, relinquish, rid, rob, sacrifice, say uncle, shake off, slip, spend, spill, squander, succumb, suffer loss, surrender, take the count, throw off, trifle away, tumble, unburden, undergo privation, use up, wander from, waste, yield
ROGET THESAURUS
Lose
Failure
VB
fail, be unsuccessful, not succeed, make vain efforts, do in vain, labor in vain, toil in vain, flunk, lose one's labor, take nothing by one's motion, bring to naught, make nothing of, wash a blackamoor white, roll the stones of Sisyphus, do by halves, lose ground, fall short of, miss, miss one's aim, miss the mark, miss one's footing, miss stays, slip, trip, stumble, make a slip, blunder, make a mess of, make a botch of, bitch it, miscarry, abort, go up like a rocket and come down like the stick, come down in flames, get shot down, reckon without one's host, get the wrong pig by the tail, get the wrong sow by the ear, limp, halt, hobble, titubate, fall, tumble, lose one's balance, fall to the ground, fall between two stools, flounder, falter, stick in the mud, run aground, split upon a rock, beat one's head against a stone wall, run one's head against a stone wall, knock one's head against a stone wall, dash one's head against a stone wall, break one's back, break down, sink, drown, founder, have the ground cut from under one, get into trouble, get into a mess, get into a scrape, come to grief, go to the wall, go to the dogs, go to pot, lick the dust, bite the dust, be defeated, have the worst of it, lose the day, come off second best, lose, fall a prey to, succumb, not have a leg to stand on, come to nothing, end in smoke, flat out, fall to the ground, fall through, fall dead, fall stillborn, fall flat, slip through one's fingers, hang fire, miss fire, flash in the pan, collapse, topple down, go to wrack and ruin, go amiss, go wrong, go cross, go hard with, go on a wrong tack, go on ill, come off ill, turn out ill, work ill, take a wrong term, take an ugly term, take an ugly turn, take a turn for the worse, be all over with, be all up with, explode, dash one's hopes, defeat the purpose, sow the wind and reap the whirlwind, jump out of the frying pan into the fire, go from the frying pan into the fire.
Loss
VB
lose, incur a loss, experience a loss, meet with a loss, miss, mislay, let slip, allow to slip through the fingers, be without, forfeit, get rid of, waste, be lost, lapse.
Oblivion
VB
forget, be forgetful, fall into oblivion, sink into oblivion, have a short memory, have no head, forget one's own name, have on the tip of one's tongue, come in one ear and go out the other, slip memory, escape memory, fade from memory, die away from the memory, lose, lose sight of, fail to recall, not be able to recall, unlearn, efface, discharge from the memory, consign to oblivion, consign to the tomb of the Capulets, think no more of, cast behind one's back, wean one's thoughts from, let bygones be bygones.
Unintelligibility
VB
be unintelligible, require explanation, have a doubtful meaning, pass comprehension, render unintelligible, conceal, darken, confuse, perplex, not understand, lose, lose the clue, miss, not know what to make of, be able to make nothing of, give it up, not be able to account for, not be able to make either head or tail of, be at sea, wonder, see through a glass darkly, not understand one another, play at cross purposes.