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Definitions from the Web

Term: Lethargic

Part of Speech: Adjective

Definition: Feeling a lack of energy or motivation; sluggish.

Synonyms: sluggish, inactive, listless, apathetic, slow, lazy

Antonyms: energetic, active, lively, vibrant, animated

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Sense: Popular

Usage: After a long day at work, she felt lethargic and didn't have the energy to cook dinner.

Sample Sentence: The rainy weather made everyone feel lethargic and unwilling to go outside.

Sense: Local

Usage: The heat wave left the residents of the city feeling lethargic and unable to concentrate.

Sample Sentence: The intense humidity during summer in this region often makes people lethargic and reduces their productivity.