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

要因

Reading

Kana: よういん
Romaji: youin
Kana
Romaji

Definition

1

main cause; primary factor

Kanji

Readings: ヨウ、 い.る、 かなめ
Meanings: need, main point, essence, pivot, key to
Readings: イン、 よ.る、 ちな.む
Meanings: cause, factor, be associated with, depend on, be limited to

Example Sentences

健康(けんこう)幸福(こうふく)重要(じゅうよう)要因(よういん)だ。
➥Health is an important factor of happiness.
Full Entry➤
その犯罪(はんざい)(だい)(いち)要因(よういん)(なに)ですか。
➥What is the main cause of the crime?
Full Entry➤
これら(ふた)つの要因(よういん)(たが)いに無関係(むかんけい)である。
➥These two factors are independent of each other.
Full Entry➤
(とみ)幸福(こうふく)(いち)要因(よういん)ではあろう。
➥Wealth may be a factor of happiness.
Full Entry➤
(わたし)行動(こうどう)する(まえ)様々(さまざま)要因(よういん)(かんが)えた。
➥I thought of various factors before I acted.
Full Entry➤
(かれ)失敗(しっぱい)(だい)(いち)要因(よういん)怠惰(たいだ)である(こと)だ。
➥The primary cause of his failure is laziness.
Full Entry➤
Find More