"Slumped" Natural Recordings by Native Speakers
Sagging or hunchbacked, typically with the shoulders or posture.
The word "slumbers" is the third person singular present tense of the verb "to slumber", which means to sleep or to be in a state of drowsy sleep or half-sleep. It can also be a noun, referring to a period of sleep or drowsiness.
Slumberous refers to a state of deep drowsiness or sleep, often characterized by a slow and heavy sleep, often accompanied by a feeling of heaviness or lethargy.