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.

Many taking weight-loss medications initially lose fat and feel great, but quickly start to feel weak and lethargic, he said.

From The Wall Street Journal • May 17, 2026

A baby boy in Kentucky vomited before becoming lethargic.

From Salon • May 7, 2026

"It was just a really lethargic performance in the first half, but the second half was everything I wanted to see."

From Barron's • Jan. 31, 2026

He has looked lethargic behind the stumps, dropping a crucial catch and failing to move for another in Brisbane.

From BBC • Dec. 11, 2025

Suddenly, it all made sense—the nausea, the dizziness, the feeling of being heavy and lethargic.

From "Copper Sun" by Sharon M. Draper

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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