fair enough
US /ˌfer əˈnʌf/
UK /ˌfer əˈnʌf/

1.
なるほど, 結構です
used to say that you understand and accept what someone has said
:
•
I can't come to the party, I have to work. Oh, fair enough.
パーティーには行けない、仕事があるんだ。ああ、なるほど。
•
You want to leave early? Fair enough, you've done a lot today.
早く帰りたいの?なるほど、今日はたくさんやったからね。