作さ用よう因いんMeaningsNoun1. efficient cause (one of Aristotle's four fundamental types of answer to the question "why?")Kanji used作make用used for因causePitch accentさよういんComposed of作さ用ようaction; operation; process; agency; effect; functionNoun因いんcause; factor; hetu (direct cause, esp. as opposed to indirect conditions); the basis of one's argument (in hetuvidya)Noun