This site will be taken down March 31st, 2026.

This was not an easy decision to make. For the last couple years, I have been struggling to find motivation for this site and to keep up with basic maintenance and security updates. With the rise of AI and more sophisticated tools, the usefulness of sites like this is questionable and traffic has nose-dived. I just don't have it in me to keep doing this. Thank you all for 10 years of support!

Zach

作用因

Reading

Kana: さよういん
Romaji: sayouin
Kana
Romaji

Definition

1

efficient cause

See also: 動力因

Kanji

Readings: サク、 サ、 つく.る、 つく.り、 -づく.り
Meanings: make, production, prepare, build
Readings: ヨウ、 もち.いる
Meanings: utilize, business, service, use, employ
Readings: イン、 よ.る、 ちな.む
Meanings: cause, factor, be associated with, depend on, be limited to