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

Symptoms of adder bites in dogs include pain and swelling, bruising, lethargy, drooling and vomiting.

From BBC • Apr. 24, 2026

Depression was assessed through a questionnaire asking about depressed mood, disinterest, restlessness or lethargy during the previous two weeks.

From Science Daily • Nov. 17, 2025

Spanish newspaper Marca wrote Madrid have "forged a new identity" and now "dominate, suffocate and subdue their opponents" -- a far cry from the lethargy of Ancelotti's final season.

From Barron's • Nov. 3, 2025

There was consternation darkening every expression, and Captain Black yawned deliciously, rubbed the last lethargy from his eyes and laughed gloatingly each time he told someone else to eat his liver.

From "Catch-22" by Joseph Heller

Vocabulary lists containing lethargy

The Giver

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The Pearl

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The Hunger Games

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