certainty

確信、確実性

疑いなく、あることが本当だとわかっている状態や気持ち。

やさしい英語で： The feeling or state of knowing that something is true, with no doubt.

• I cannot say with certainty.
• His certainty surprised everyone in the room.
• Can you prove with absolute certainty that she was there?

使い方： certainty about something (She expressed certainty about the result.); with certainty (We cannot predict the weather with certainty.)

類義語： confidence, assurance

反対語： uncertainty, doubt

よく使う表現： absolute certainty, with certainty, certainty about something

確実なこと

必ず起こること、または間違いなく本当であること。

やさしい英語で： Something that will definitely happen or is definitely true.

• Victory is now a certainty.
• A second election became a certainty after the talks failed.
• Is promotion really a certainty for her?

類義語： sure thing

よく使う表現： a certainty, virtual certainty, certainty for someone