well up

湧き出る、込み上げる

液体がゆっくり上がるか湧き出し、ある場所にたまり始める。

やさしい英語で： If liquid does this, it slowly rises or comes out and begins to fill a place.

• Tears welled up in her eyes.
• Water was welling up through the floor.
• Oil welled up from the hole as we watched.

使い方： well up in something (Tears welled up in her eyes.); well up from something (Water welled up from a crack in the ground.)

類義語： rise, seep up

よく使う表現： well up slowly, well up inside

込み上げる、湧き上がる

心の中で感情が強くなり、抑えにくくなる。

やさしい英語で： If a feeling does this, it grows stronger inside you and becomes hard to control.

• Anger welled up inside him.
• Joy welled up as she read the letter.
• Old grief was welling up again.

使い方： well up in someone (A sudden anger welled up in me.)

類義語： surge, rise

よく使う表現： well up inside, well up suddenly

詳しい、精通している

ある分野について、たくさんの知識がある。

やさしい英語で： Knowing a lot about a particular subject.

• She is well up on local history.
• Are you well up in algebra?
• Our guide was well up on the town’s traditions.

使い方： be well up on something (She is well up on local history.); be well up in something (He is well up in mathematics.)

類義語： knowledgeable, well informed, well versed

反対語： uninformed

よく使う表現： well up on something, well up in something