lethargic
adjective
UK/ləˈθɑː.dʒɪk/
US/ləˈθɑːr.dʒɪk/
Definitions of lethargic adjective
Characterized by a lack of energy and enthusiasm; sluggish and apathetic.
After the long, tiring journey, he felt lethargic.
The persistent hot weather made her feel lethargic and unmotivated.
After taking the medication, he became lethargic and slow to react.