Drowsy/ˈdraʊzi/ Definition 1 of 3Pro Tip 1/3Physical State Describes a feeling before sleep, like heavy eyelids and yawning. After studying all night, his drowsy state was inevitable. Pro Tip 2/3Not Fully Asleep Indicates not asleep yet, but on the brink of falling asleep. During the boring lecture, I was so drowsy I could barely keep my eyes open. Pro Tip 3/3Temporary State Often a short-lived sensation that can be remedied with rest. A quick power nap can usually fix feeling drowsy in the afternoon.