Definitions

lethargy

[leth-er-jee] / ˈlɛθ ər dʒi /

NOUN

laziness, sluggishness

Synonyms

STRONGEST

apathy disinterest drowsiness inactivity

STRONG

coma disregard dullness hebetude heedlessness idleness impassivity inaction inanition indifference indolence inertia inertness insouciance languor lassitude listlessness passiveness phlegm sleep sleepiness sloth slowness slumber stupor torpidity torpidness torpor unconcern unmindfulness

WEAK

supineness

Antonyms

STRONG

action awakening concern consciousness interest liveliness regard wakefulness

WEAK

activity busyness energy life vigor vitality vivaciousness vivacity

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.

In addition to eye, skin and breathing problems, MMA exposure can cause headaches, coughing and lethargy, according to the EPA.

From The Wall Street Journal • May 24, 2026

It could have been very different had Rangers not lifted themselves out of their lethargy after finding themselves behind to goals from Ben Broggio and Finn Yeats after only 26 minutes.

From BBC • Apr. 12, 2026

Symptoms in dogs include lethargy, vomiting and diarrhea.

From Los Angeles Times • Jan. 17, 2026

Pascal Struijk glanced a header narrowly wide from another corner to underline Chelsea's lethargy at the back.

From Barron's • Dec. 3, 2025

A deep, heavy fog of lethargy washed over me, and my eyes closed without my permission.

From "Twilight" by Stephenie Meyer

Vocabulary lists containing lethargy

The Giver

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The Pearl

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The Hunger Games

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