THESAURUS
Lassitude
acedia, adynamia, anemia, apathy, atony, blah feeling, bloodlessness, blues, boredom, brain fag, cachexia, cachexy, cowardice, debilitation, debility, depression, disinterest, disregard, doldrums, drowsiness, dullness, dumps, enervation, enfeeblement, ennui, etiolation, exhaustion, eyestrain, faintness, fatigue, feebleness, flabbiness, flaccidity, goneness, heart strain, heaviness, hebetude, heedlessness, impotence, inanimation, indifference, insouciance, jadedness, lackadaisicalness, languidness, languishment, languor, languorousness, lenitude, lentor, lethargy, lifelessness, listlessness, mental fatigue, mental strain, oscitancy, overstrain, overtiredness, passivity, phlegm, powerlessness, prostration, satedness, sleep, sleepiness, sloth, slothfulness, slowness, sluggishness, slumber, softness, somnolence, stance fatigue, strain, strengthlessness, stupefaction, stupor, supineness, tedium, tiredness, torpidity, torpidness, torpitude, torpor, unconcern, unmindfulness, weakliness, weakness, wearifulness, weariness, world-weariness
ROGET THESAURUS
Lassitude
Fatigue
N
fatigue, weariness, yawning, drowsiness, lassitude, tiredness, fatigation, exhaustion, sweat, dyspnoea, anhelation, shortness of breath, faintness, collapse, prostration, swoon, fainting, deliquium, syncope, lipothymy, goneness, fatigued, tired, weary, drowsy, drooping, haggard, toilworn, wayworn:, footsore, surbated, weather-beaten, faint, done up, used up, knocked up, bushed, 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, fatiguing, tiresome, irksome, wearisome, weary, trying.
Weariness
N
weariness, defatigation, lassitude, drowsiness, disgust, nausea, loathing, sickness, satiety, taedium vitae, boredom, ennui, wearisomeness, tediousness, dull work, tedium, monotony, twice-told tale, bore, buttonholer, proser, wet blanket, pill, stiff, heavy hours, the enemy (time), wearying, wearing, wearisome, tiresome, irksome, uninteresting, stupid, bald, devoid of interest, dry, monotonous, dull, arid, tedious, humdrum, mortal, flat, prosy, prosing, slow, soporific, somniferous, disgusting, unenjoyed, weary, tired, drowsy, uninterested, flagging, used up, worn out, blase, life-weary, weary of life, sick of, wearily, usque ad nauseam, time hanging heavily on one's hands, toujours perdrix, crambe repetita.