yawning

nouns

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

"he could not suppress a yawn"; "the yawning in the audience told him it was time to stop"; "he apologized for his oscitancy"

oscitance, oscitancy, yawn, yawning

is derived from

gaping open as if threatening to engulf someone or something

"the yawning mine shaft"; "a yawning abyss"

yawning

is similar to

affording free passage or access

"open drains"; "the road is open to traffic"; "open ranks"

with the mouth wide open indicating boredom or sleepiness

"a yawning congregation"

yawning

is similar to

used of mouth or eyes

"keep your eyes open"; "his mouth slightly opened"

showing lack of attention or boredom

"the yawning congregation"

drowsy, oscitant, yawning