yawning - noun

an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom

yawning - adjective

• gaping open as if threatening to engulf someone or something
• with the mouth wide open indicating boredom or sleepiness
• showing lack of attention or boredom

yawning - thesaurus

drowsy   oscitance   oscitancy   oscitant   yawn