While people often use the term “lethargic” to describe someone who’s tired, fatigued or drowsy, they’re not the same. Lethargy indicates something is affecting your brain, your level of consciousness and. Dec 6, 2025 · Lethargy causes a lack of energy and drowsiness beyond normal tiredness. It may improve with rest or be a sign of an underlying condition. How Can You Tell if You're Lethargic?. The meaning of LETHARGIC is of, relating to, or characterized by laziness or lack of energy : feeling or affected by lethargy : sluggish. How to use lethargic in a sentence.

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LETHARGIC definition: of, relating to, or affected with lethargy; drowsy; sluggish; apathetic. See examples of lethargic used in a sentence.

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