: a lack of energy or a lack of interest in doing things : a lethargic feeling or state
Symptoms of the disease include loss of appetite and lethargy.
I snapped out of my lethargy and began cleaning the house.
—sometimes used figurativelyThe stock market's recent lethargy is cause for concern.
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“Lethargy.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/lethargy. Accessed 16 Apr. 2026.
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