languor

Lack of physical or mental energy; listlessness: synonym: lethargy.

A dreamy, lazy, or sensual quality, as of expression.

Oppressive stillness, especially of the air.

Faintness or feebleness of body; oppression from fatigue, disease, trouble, or other cause; languidness; dullness; heaviness.

Sickness; illness; suffering; sorrow.