Of or producing lethargy.
Having lethargy; abnormally drowsy or dull, sluggish, etc.
Of, causing, or characterized by lethargy.
The definition of lethargic is being sluggish or having little energy.
An example of lethargic is a person who refuses to walk up one flight of stairs and takes the elevator instead.
Origin of lethargic
From Ancient Greek Î»Î·Î¸Î±ÏÎ³Î¹ÎºÏŒÏ‚ (lethargikos), from Î»Î®Î¸Î±ÏÎ³Î¿Ï‚ (lÄ“thargos, “forgetful, lethargic"), from Î»Î®Î¸Î· (lÄ“thÄ“, “a forgetting, forgetfulness") (from which Lethe (“river in Hades")) + á¼€ÏÎ³ÏŒÏ‚ (argos, “not working")