boil, seethe
On'yomi (音読み)
- フ
- フツ
Kun'yomi (訓読み)
- わ.く
- わ.かす
About this kanji
The kanji 沸 (fu / waku) primarily means 'to boil' or 'to seethe.' It is commonly used both as a noun and a verb. For example, 沸騰 (ふっとう) means 'boiling,' which describes the action when water heats up to its boiling point. The verb 沸かす (わかす) means 'to boil' and is often used when you talk about heating water for tea or cooking. Another useful expression is 沸き上がる (わきあがる), meaning 'to boil up,' which you might encounter when water bubbles vigorously. When using this kanji, remember that it usually relates to heated liquids!
Built from
Example sentences
お湯が沸いた。
The water has boiled.
Meanings across languages
- English
- boil, seethe
- Tiếng Việt
- sôi, sục sôi
- 日本語
- 沸く, 沸騰
- 한국어
- 끓다, 부글부글하다
- 中文
- 煮, 翻滚
- id
- mendidih, menggelegak
- th
- เดือด, ฟอง
- es
- hervir, burbujeo
- fr
- bouillir, se bouillonner
- de
- sieden, kochen
- pt
- ferver, borbulhar
Common compounds
- 沸騰boiling, seething
- 沸かすto boil, to heat up
- 沸き上がるto boil up, to surge up
- 沸騰状態boiling state, state of boiling
Words using this kanji
Want to actually learn this kanji?
The dictionary is one view. The Kanji 360 app wraps every character with mnemonic images, audio readings, stroke-order animation, story context, and SRS scheduling — free to start on iPhone, iPad, and Android.