むくむ

godan verb (-mu), intransitive verb

swell; become swollen; become puffy; become bloated

Describes body parts or the whole body swelling, often from fluid retention, lack of sleep, or health conditions. Common in everyday speech.

• 朝あさ起おきたら顔かおがむくんでいた。

  When I woke up in the morning, my face was puffy.

• 足