yawning

Gaping open; cavernous.

Gaping; oscitation; the taking of a deep inspiration, followed by a slight pause, and then a prolonged expiration, the mouth being more or less widely open.

Present participle of yawn.

The action of the verb yawn.

That yawns or yawn.

Wide open.

showing lack of attention or boredom

gaping open as if threatening to engulf someone or something

with the mouth wide open indicating boredom or sleepiness

an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom