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lethargic

/ləˈθɑɹdʒɪk/ · leth·ar·gic
adjective
  1. Sluggish, slow; lacking energy or vitality. After a long illness, she felt lethargic and struggled to get out of bed.
  2. Indifferent, apathetic; showing a lack of interest or enthusiasm. He seemed lethargic about the upcoming exam, barely studying for it.
Did you know? The term 'lethargic' has been used to describe not only a state of physical inactivity but also a mental or emotional state of apathy or disinterest, reflecting the complex interplay between physical and mental well-being.
Written by Lexi Wordsworth, Dictionary Editor 2 lookups Added Jul 24, 2026