理りの当とう然ぜん

expression

standing to reason; natural; only natural

Used to say that something is logically expected or a matter of course. Often appears in the pattern 理の当然だ or 理の当然として.

• 彼かれが怒おこるのは理りの当とう然ぜんだ。

  It's only natural that he gets angry.

• 努ど力りょくした者ものが報むくわれるのは理りの当とう然ぜんである。

  It stands to reason that those who work hard will be rewarded.