- The definition of drowsy is a feeling of being sleepy, tired or not fully awake.
When you are just about to fall asleep and are having a hard time keeping your eyes open, this is an example of a time when you are drowsy.
A drowsy child.
- Dull with sleepiness; sluggish.
- Produced or characterized by sleepiness.
- Inducing sleepiness; soporific.
(comparative drowsier, superlative drowsiest)
Probably from or akin to Old English drūsian.