oscitance

Noun (2)

1. drowsiness and dullness manifested by yawningSynonyms: oscitancy
2. 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”Synonyms: yawnyawningoscitancy