to find the real reason or cause of something
物事の本当の理由や原因を突き止める (monogoto no hontou no riyuu ya genin o tsukitomeru)
"Let’s get to the bottom of it before making any decision."
"決定を下す前に、その本当の理由を突き止めましょう。" (kettei o kudasu mae ni sono hontou no riyuu o tsukitomemashou)
To have unrealistic or impractical plans or dreams.
something attractive but not allowed or morally wrong
To retire someone or something from active use.
recovered and healthy again
to control people very strictly and harshly
Willing to consider new ideas or opinions.