Definitions

lethargic

[luh-thahr-jik] / ləˈθɑr dʒɪk /

ADJECTIVE

lazy, sluggish

Synonyms

STRONGEST

apathetic dull lackadaisical laid-back languid listless passive sleepy

WEAK

blah comatose debilitated dilatory dopey dormant draggy drowsy enervated having spring fever heavy idle impassive inactive indifferent inert laggard languorous moony nebbish out of it phlegmatic sleepyhead slothful slow slumberous snoozy somnolent spiritless stolid stretchy stupefied supine torpid wimpy

Antonyms

STRONGEST

active alert animated caring energetic lively vivacious

WEAK

busy vital

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Looking at a sloth and trying to determine if they are lethargic or not cannot be the easiest," said Simpson-Brown.

From BBC • Apr. 21, 2026

That show is growing duller, and more lethargic and repetitive, by the day, like watching reruns of a canceled sitcom.

From Salon • Feb. 13, 2026

But never have I seen a team with so much potential and skill be so absolutely lethargic and unwatchable this season.

From Los Angeles Times • Dec. 27, 2025

He looked increasingly lethargic as the India series wore on, with both his batting and keeping suffering as a result.

From BBC • Dec. 5, 2025

From there he wasted very quickly to a lethargic little bundle of skin-covered bones and a gaunt, skin-covered skull.

From "The Poisonwood Bible" by Barbara Kingsolver

Vocabulary lists containing lethargic

ASVAB Word Knowledge

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Essential Academic Vocabulary for High School Students, List 3

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ACT Vocabulary List

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