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

There was a lethargy to Newcastle and you do not have to look too far to realise where the issues are for this leaky side.

From BBC • Feb. 28, 2026

Carrick's men paid for their lethargy five minutes into the second half.

From Barron's • Feb. 10, 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

Not the lethargy of lying on the couch or the dull monotony of drifting off in math class.

From "Every Day" by David Levithan

Vocabulary lists containing lethargy

The Giver

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The Pearl

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The Hunger Games

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