Sleepily
/ˈsliːpɪli/
Definition 1 of 1
Pro Tip 1/3Non-Energy
Use 'sleepily' to describe actions lacking energy due to tiredness. 
After studying all night, he answered the phone sleepily.
Pro Tip 2/3Morning Routine
'Sleepily' is often used to describe someone's state during their morning activities. 
She walked to the bathroom sleepily, rubbing her eyes.
Pro Tip 3/3Subtle Reluctance
The adverb can imply a subtle reluctance to wake up or start the day. 
He sleepily hit the snooze button, not ready to rise.