沸き わき Meanings Noun boiling Kanji 沸 boil. Read as わく. Words containing 沸き 沸き立つ (わきたつ) to boil strongly 沸き起こる (わきおこる) to well up 沸きが早い (わきがはやい) quick to warm up (e.g. of a kettle) And 2 more. Jinuma: Japanese Dictionary · Word lists