理り由ゆうをつける

expression, ichidan verb

give a reason; attach a reason

Used when someone provides or invents a reason for something, often with a nuance of justification or excuse.

• 遅ち刻こくの理り由ゆうをつけるのに苦く労ろうした。

  I struggled to come up with a reason for being late.

• 彼かれはいつも何なにか理り由ゆうをつけて誘さそいを断ことわる。

  He always finds some reason to turn down invitations.