oscitance
Noun
Meaning
an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
drowsiness and dullness manifested by yawning
Source: WordNetSynonyms
Hypernyms
Hyponyms
Examples
he could not suppress a yawn
the yawning in the audience told him it was time to stop
he apologized for his oscitancy