OSCITANCY
yawn, yawning, oscitance, oscitancy
(noun) 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”
oscitancy, oscitance
(noun) drowsiness and dullness manifested by yawning
Source: WordNet® 3.1
Etymology
Noun
oscitancy (plural oscitancies)
the act of yawning
drowsiness, especially when marked by yawning
Synonyms
• oscitance
Anagrams
• canticoys
Source: Wiktionary
Os"ci*tan*cy, n. Etym: [See Oscitant.]
1. The act of gaping or yawning.
2. Drowsiness; dullness; sluggishness. Hallam.
It might proceed from the oscitancy of transcribers. Addison.
Source: Webster’s Unabridged Dictionary 1913 Edition