English to English

noun (n)

• drowsiness and dullness manifested by yawning(noun.state)

  Synonym:
  oscitancy
  

  source: wordnet30
• an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom(noun.act)

  Synonym:
  oscitancy, yawn, yawning
  

  source: wordnet30