definition of
oscitancy

[1] #1 oscitancy n. [oscitance] drowsiness and dullness manifested by yawning. wn

[2] #2 oscitancy n. [yawn, yawning, oscitance] 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". wn