lethargy

noun

Etymology: From Middle English litargie, from Medieval Latin litargia, from Late Latin lēthārgia, borrowed from Ancient Greek ληθᾱργῐ́ᾱ (lēthārgĭ́ā, “drowsiness”), from λήθᾱργος (lḗthārgos, “forgetful, lethargic”) + -ῐ́ᾱ (-ĭ́ā, adjectival suffix).

1. A state of extreme torpor, sopor or apathy, especially with lack of emotion, energy or enthusiasm; (loosely) sluggishness, laziness.

   “Europe lay then under a deep lethargy.”

   “Gradually the darkened room seems to emerge from its shadows; familiar objects strike upon the senses—and memory is never so terribly distinct as on its first reviving from such momentary lethargy.”

2. A condition characterized by extreme fatigue or drowsiness, deep unresponsiveness, or prolonged sleep patterns.

   “This Apoplexie is (as I take it) a kind of Lethargie, a sleeping of the blood, a horson Tingling.”

   “So in order to avoid unpleasant side effects like lethargy and sexual dysfunction, most recent trials also gave men testosterone supplements.”