欠伸(あくび)する

あくびする
suru verb
to yawn
1. to yawn
To involuntarily open the mouth wide and breathe in deeply, usually when tired or bored.
眠(ねむ)くて欠伸(あくび)が出(で)る。
I'm so sleepy I keep yawning.
欠伸が出る = to yawn (lit. yawns come out)
会議中(かいぎちゅう)に欠伸(あくび)をしないで。
Don't yawn during the meeting.
欠伸(あくび)は伝染(でんせん)するらしい。
Yawning is apparently contagious.

The noun 欠伸(あくび) can be used with する to form a verb. The expression 欠伸(あくび)が出(で)る is equally common.

COMMON PATTERNS:

  • 欠伸(あくび)をする: to yawn
  • 欠伸(あくび)が出(で)る: to yawn (lit. a yawn comes out)
  • 大(おお)きな欠伸(あくび): a big yawn

KANJI NOTE:
欠伸(あくび) literally means "lacking stretch" (欠(けつ) = lack + 伸(しん) = stretch). Often written in hiragana.

core
Added 2026.1.16 14:48 · Revised 2026.1.19 21:17
05000/05350_akubisuru