lethargic
deficient in alertness or activity
Pertaining to, affected with, or resembling, lethargy; morbidly drowsy; dull; heavy.
Gk. lethargos, lazy
“Continue to preach them for the sake of the lethargic peace of which you speak? leave the church paralyzed, as I found it?" "Paralyzed!”
— Winston Churchill, Project Gutenberg Complete Works of Winston Churchill
In Bruges, Sarah found herself feeling lethargic after three straight days of chocolate indulgence. Even the canals seemed less charming as she dragged her feet, vowing to swap sweets for salads before returning home.
Owen wandered through Krakow's narrow streets, his feet moving as slowly as the sluggish Vistula River that bordered the city. At Wawel Royal Castle's shadow, he found himself leaning against a stone wall, utterly lethargic, barely able to lift his head from where it rested on his folded arms.
“In rare cases, when Amur tigers prey on brown bears, they usually target young and sub-adult bears, besides small female adults taken outside their dens, generally when lethargic from hibernation.”