perfectly

まったく、完全に

ある状態や性質が十分に当てはまることを強調する。

やさしい英語で： Completely; used to make a description stronger.

• That is perfectly normal.
• Your instructions were perfectly clear.
• I am perfectly happy to wait.

類義語： completely, entirely, quite

よく使う表現： perfectly clear, perfectly normal, perfectly good, perfectly fine

完璧に

間違いや問題がまったくないように。

やさしい英語で： In a way that has no mistakes or problems.

• The key fits perfectly.
• She played the piece perfectly.
• Every part of the machine worked perfectly.

類義語： flawlessly, faultlessly

反対語： badly

よく使う表現： work perfectly, fit perfectly, perform perfectly