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Definition of lethargic

lethargic

/ləˈθɑːr.dʒɪk/
le · thar · gic
Adverb:lethargically
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lethargic Lexical Profile

lethargic Game Scores & Validity

• adjective

1

Affected by a lack of energy, alertness, or enthusiasm; sluggish and apathetic.

Example

"The hot, humid afternoon made everyone in the office feel sluggish and lethargic."

2

Relating to or characterized by clinical lethargy or abnormal, pathological drowsiness.

Example

"When the patient became increasingly lethargic and difficult to rouse, the physician ordered an immediate neurological evaluation."

Synonyms
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Antonyms
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• Nearby Words

lethal
lethality
lethally
lethargic
lethargically
lethargy
letter

Word Origin & Etymology

Borrowed from Late Latin lethargicus, from Ancient Greek lethargikos, derived from lethe ('forgetfulness') and argos ('idle, inactive'). In Greek mythology, Lethe was also the river of forgetfulness in the underworld.

Cite this Entry

Wordmom. (2026). Definition of Lethargic. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/lethargic
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