lethargic

adjective

le·​thar·​gic lə-ˈthär-jik How to pronounce lethargic (audio)
le-
1
: of, relating to, or characterized by laziness or lack of energy : feeling or affected by lethargy : sluggish
The patient was weak and lethargic.
2
: indifferent, apathetic
The legislature was lethargic in considering the bill.
lethargically adverb

Did you know?

In Greek mythology, Lethe was the name of a river in the underworld that was also called "the River of Unmindfulness" or "the River of Forgetfulness." Legend held that when someone died, they were given a drink of water from the river Lethe to forget all about their past life. Eventually this act of forgetting came to be associated with feelings of sluggishness, inactivity, or indifference. The name of the river and the word lethargic, as well as the related noun lethargy, all come from lēthē, Greek for "forgetfulness."

Examples of lethargic in a Sentence

You'll need to move your lure as slowly as possible to tempt the lethargic fish into feeding … Lenny Rudow, Boating, December 1997
… became a drifter and for a time an alcoholic and finally lapsed into lethargic self-abasement. Stanley Karnow, New York Times Book Review, 14 Oct. 1984
The audience was cold and lethargic. It is true there were about fifty-seven applauses, but they were not roars of enthusiasm by any means. Lady Bird Johnson 12 Jan. 1966, in A White House Diary1970
The patient is weak and lethargic. a big meal always makes me feel lethargic and sleepy
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Some signs a dog is grieving a furry friend include lack of appetite, lethargic behavior, searching for a companion dog, becoming clingy to the owner or withdrawing from people and other pets. William Lambers, Newsweek, 9 Mar. 2025 Over time, Fineman noticed that Peach was growing more lethargic, agitated, and itchy, which interrupted the peace of his beloved routine. Colson Thayer, People.com, 7 Mar. 2025 Eventually, the child’s parents noticed the toddler was lethargic and not responsive. Saleen Martin, USA TODAY, 4 Mar. 2025 The Huskies got out to a lethargic start and struggled for more than four minutes to get a shot to fall. Emily Adams, Hartford Courant, 28 Feb. 2025 See All Example Sentences for lethargic

Word History

Etymology

see lethargy

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of lethargic was in the 14th century

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Cite this Entry

“Lethargic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lethargic. Accessed 28 Mar. 2025.

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