os·ci·tance英ˈɒsɪtəns美ˈɑsɪtənsAHDŏsʹĭ-təns 基本英英 🌏震撼 Noun: drowsiness and dullness manifested by yawningan 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