Use 'drowse' to describe a state between being awake and asleep, showing someone isn't fully alert.

Half-Awake State

'Drowse' can imply physical inactivity and suggest a relaxed posture or environment.

Physical Activity

The act of 'drowsing' often gradually happens as sleepiness takes over, generally unplanned.

Use 'drowse' when the environment or a situation causes people to feel sleepy or less alert.

Describing something as 'drowsing' suggests it has a quality that can make people sleepy.

'Drowse' implies that the sleepiness is unintentional, often arising from boredom or monotony.