lethargic

Meanings

1. 1
   adj

   Lacking energy and feeling slow or sleepy.

   The heat made the whole class feel lethargic and unfocused.

Learned borrowing from Ancient Greek ληθαργικός (lēthargikós), from λήθαργος (lḗthargos, “forgetful, lethargic”), from λήθη (lḗthē, “a forgetting, forgetfulness”) (from which Lethe (“river in Hades”)) + ἀργός (argós, “not working”). By surface analysis, lethargy + -ic.

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