Drowsily
/ˈdraʊzɪli/
Definition 1 of 1
Pro Tip 1/3Tiredness Indicated
Use 'drowsily' to show someone is on the verge of sleep or very tired. 
He shuffled to the bathroom drowsily.
Pro Tip 2/3Subtle Slowness
Describe actions slowed by sleepiness using 'drowsily', implying a gentle, sluggish quality. 
She drowsily turned the pages of her book before bedtime.
Pro Tip 3/3Diminished Alertness
'Drowsily' suggests that someone is not fully alert or aware of their surroundings. 
He drowsily nodded during the lecture, missing important points.