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習い性となる (ならいせいとなる) Japanese meaning | Kotomora

習ならい性せいとなる

Meanings

1

expression, godan verb (-ru)

habit becomes second nature

proverb

Proverb meaning that repeated actions eventually become ingrained as part of one's character.

毎まい日にちの練れん習しゅうが習ならい性せいとなって、彼かれは自し然ぜんと早はや起おきできるようになった。
Daily practice became second nature, and he naturally became able to wake up early.

嘘うそをつくことが習ならい性せいとなると、信しん用ようを失うしなう。

If lying becomes a habit, you'll lose trust.

Written forms

習ならい性せいとなる
Standard kanji spelling for this proverb.
習ならい性せいと成なる
Alternate spelling using 成る; less common but still encountered.

Kanji

習learn
性sex, gender, nature
成turn into, become, get

Similar words

習しゅう慣かんは第だい二にの天てん性せい
A more direct translation of 'habit is second nature', using 天性 (innate nature) instead of 性 (nature/character). 習い性となる is a more traditional Japanese phrasing.

Etymology

A Japanese proverb combining 習い (habit, learning) and 性 (nature, disposition) with the verb なる (to become). The exact origin is uncertain, but it reflects a common East Asian idea that repeated behavior shapes character.