生なまあくび

noun

slight yawn; half-suppressed yawn

A yawn that is not fully open or is stifled, often involuntary or done discreetly.

• 会かい議ぎ中ちゅうに生なまあくびが出でてしまった。

  I let out a slight yawn during the meeting.

• 彼かの女じょは生なまあくびをかみ殺ころした。

  She stifled a half-yawn.