die off

次々に死ぬ、徐々に死滅する

集団の仲間が次々に死に、生き残る数が減っていく。

やさしい英語で： Members of a group die one after another, so fewer remain.

• The fish began to die off.
• Many old trees died off during the drought.
• Will the whole population die off if the disease spreads?

類義語： die out

よく使う表現： die off gradually, die off completely, trees die off

消滅する、廃れる

集団や活動、習慣が次第になくなる。

やさしい英語で： A group, activity, or custom gradually stops existing.

• Several local clubs died off.
• The tradition slowly died off as young people moved away.
• Interest faded, and the movement eventually died off.

類義語： die out, disappear

よく使う表現： clubs die off, die off gradually

次第に聞こえなくなる、消えていく

音がだんだん小さくなり、やがて聞こえなくなる。

やさしい英語で： A sound becomes quieter until you can no longer hear it.

• The applause died off.
• Their voices died off as they walked farther away.
• We waited for the last echoes to die off.

類義語： fade away, die away

よく使う表現： music die off, die off slowly