abeyance, acedia, adynamia, anemia, apathy, atony, blah feeling, bloodlessness, blues, boredom, brain fag, cachexia, cachexy, catalepsy, catatonia, cautiousness, circumspection, coma, cowardice, creeping, deadliness, deathliness, debilitation, debility, deliberateness, deliberation, depression, doldrums, dormancy, doziness, drawl, drowsiness, dullness, dumps, enervation, enfeeblement, ennui, entropy, etiolation, exhaustion, eyestrain, faintness, fatigue, feebleness, flabbiness, flaccidity, foot-dragging, goneness, heart strain, heaviness, hebetude, idleness, impotence, inanimation, indifference, indolence, inertia, inertness, jadedness, lackadaisicalness, languidness, languishment, languorousness, lassitude, latency, laziness, leisureliness, lenitude, lentitude, lentor, lethargy, lifelessness, listlessness, lotus-eating, mental fatigue, mental strain, oscitancy, oscitation, overstrain, overtiredness, pandiculation, passiveness, passivity, phlegm, pokiness, prostration, reluctance, satedness, slackness, sleep, sleepiness, sloth, slothfulness, slowness, sluggardy, sluggishness, slumber, softness, somnolence, somnolency, stagnancy, stagnation, stance fatigue, stasis, strain, strengthlessness, stretching, stupefaction, stupor, supineness, suspense, tedium, tentativeness, tiredness, torpidity, torpidness, torpitude, torpor, vegetation, vis inertiae, weakliness, weakness, wearifulness, weariness, world-weariness, yawning