acedia, adynamia, anemia, apathy, atony, blah feeling, bloodlessness, boredness, boredom, brain fag, bromidic, cachexia, cachexy, cowardice, debilitation, debility, dispiritedness, drowsiness, dry, dryasdust, dull, dullness, dusty, enervation, enfeeblement, ennui, etiolation, exhaustion, eyestrain, faintness, fatigue, fed-upness, feebleness, flabbiness, flaccidity, goneness, heart strain, heaviness, hebetude, impotence, inanimation, indifference, insipid, jadedness, lackadaisicalness, languidness, languishment, languor, languorousness, lassitude, lenitude, lentor, lethargy, life-weariness, lifelessness, listlessness, melancholy, mental fatigue, mental strain, oscitancy, overstrain, overtiredness, passivity, phlegm, prostration, satedness, satiation, satiety, sleepiness, sloth, slothfulness, slowness, sluggishness, softness, somnolence, spleen, stance fatigue, strain, strengthlessness, stupefaction, stupor, supineness, taedium vitae, tedious, tiredness, torpidity, torpidness, torpitude, torpor, uninteresting, weakliness, weakness, weariful, wearifulness, world-weariness