from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A state of sluggishness, inactivity, and apathy.
- n. A state of unconsciousness resembling deep sleep.
from the GNU version of the Collaborative International Dictionary of English
- n. Morbid drowsiness; continued or profound sleep, from which a person can scarcely be awaked.
- n. A state of inaction or indifference.
- transitive v. To lethargize.
from The Century Dictionary and Cyclopedia
- n. A state of prolonged inactivity or torpor; inertness of body or mind; sluggishness; dullness; stupor.
- n. Specifically, in pathology, a disorder of consciousness, which consists of prolonged and profound sleep, from which the patient may be momentarily aroused, but into which he quickly sinks again.
- n. The hibernation or winter sleep of an animal, or any other state of complete repose, as a period of summer lethargy observed in many insect-larvæ, the repose of many tropical animals during the dry season, etc.
- To make lethargic or dull.
- n. Same as litharge.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a state of comatose torpor (as found in sleeping sickness)
- n. weakness characterized by a lack of vitality or energy
- n. inactivity; showing an unusual lack of energy
Middle English letargie, from Old French, from Late Latin lēthārgia, from Greek lēthārgiā, from lēthārgos, forgetful : lēthē, forgetfulness + ārgos, idle (a-, without; see a-1 + ergon, work; see werg- in Indo-European roots).(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin lēthargia, from Ancient Greek ληθαργία (lēthargia, "drowsiness"), from λήθαργος (lēthargos, "forgetful, lethargic"), from λήθη (lēthē, "forgetfulness") + ἀργός (argos, "not working"). (Wiktionary)