Japanese symbol for “smoothness”

潤滑

じゅんかつ

Romaji: junkatsu

lubrication; smoothness

In Japanese, smoothness is 潤滑, read じゅんかつ (junkatsu).

Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.

Meanings

adj-na, n lubrication; smoothness

Kanji and stroke order

潤

wet, be watered, profit by

on: ジュン
kun: うるお.う、うるお.す、うる.む

15 strokes · JLPT 1

滑

slippery, slide, slip

on: カツ、コツ
kun: すべ.る、なめ.らか

13 strokes · JLPT 1

Related words

Words that share a kanji.

Word	Reading	Meaning
潤い	うるおい uruoi	moisture; damp; wetness
潤う	うるおう uruou	to become moist; to be moistened; to become damp
潤沢	じゅんたく juntaku	abundant; ample; plentiful
利潤	りじゅん rijun	profit; returns
潤す	うるおす uruosu	to moisten; to wet
円滑	えんかつ enkatsu	smooth; undisturbed; uninterrupted
滑らか	なめらか nameraka	smooth (of a surface); glassy; velvety
滑走	かっそう kassou	gliding; sliding; skating (on ice)

Data: JMdict (CC BY-SA 4.0); KANJIDIC2 (CC BY-SA 4.0); KanjiVG (CC BY-SA 3.0); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.