Lethargy1. (n.) Sluggishness; apathy; inactivity; drowsiness; continued or profound sleep, from which a person can scarcely be awaked.
2. (n.) A state of inaction or indifference.
3. (v. t.) To lethargize.
Thesaurus Entries
abstraction, abulia, acedia, alienation, aloofness, anxiety, anxiety equivalent, anxiety state, apathy, asininity, ataraxia, ataraxy, benumbedness, blah, blahs, blockishness, boobishness, boorishness, boredom, bovinity, catalepsy, catatonic stupor, cloddishness, coma, comatoseness, compulsion, crassness, crudeness, dejection, denseness, density, depression, detachment, dim-wittedness, dimness, disinterest, dispassion, disregard, dolce far niente, doltishness, doziness, drowsiness, dull-wittedness, dullardism, dullness, dumbness, duncery, elation, emotionalism, encephalitis lethargica, enervation, ennui, euphoria, exhaustion, fatigue, folie du doute, grossness, heartlessness, heaviness, hebetude, heedlessness, high, hopelessness, hypochondria, hysteria, hysterics, idleness, impassivity, inactivity, inanimation, inanition, inappetence, indifference, indolence, inertia, inertness, insensibility, insouciance, jadedness, lack of appetite, lackadaisicalness, languidness, languishment, languor, languorousness, lassitude, laziness, lenitude, lentor, lethargicalness, lifelessness, listlessness, loutishness, lumpishness, mania, melancholia, mental distress, narcohypnosis, narcolepsy, narcoma, narcosis, narcotic stupor, narcotization, ninnyism, nod, nonchalance, numbness, oafdom, oafishness, obsession, obtuseness, opacity, oscitancy, oscitation, pandiculation, passiveness, passivity, pathological indecisiveness, phlegm, phlegmaticalness, phlegmaticness, plucklessness, preoccupation, psychalgia, psychomotor disturbance, resignation, resignedness, satedness, sedation, shock, simpletonianism, sleep, sleepiness, sleeping sickness, sloth, slothfulness, slowness, sluggishness, slumber, somnolence, somnolency, sopor, soporifousness, sottishness, spiritlessness, spunklessness, stolidity, stretching, stupefaction, stupidity, stupor, supineness, swoon, thanatosis, thick-headedness, thick-wittedness, tic, tiredness, torpidity, torpidness, torpitude, torpor, trance, twitching, unconcern, unmindfulness, unresponsiveness, unteachability, weakness, weariness, withdrawal, withdrawnness, world-weariness, wrongheadedness, yawning, yokelism