lethargic

Of, causing, or characterized by lethargy.

Affected with lethargy; morbidly sluggish or drowsy; dull; torpid.

Marked by lethargy or languor; manifesting sluggishness or apathy.

Producing lethargy; causing languor or apathy; stupefying.

Pertaining to, affected with, or resembling, lethargy; morbidly drowsy; dull; heavy.