inert

不活性の

ほかの化学物質に触れても、反応したり変化したりしにくい。

やさしい英語で： Not easily changed by contact with other chemicals.

• Argon is an inert gas.
• The samples were stored under an inert atmosphere.
• This coating stays chemically inert even at high temperatures.

類義語： unreactive

反対語： reactive

よく使う表現： inert gas, chemically inert, inert atmosphere

動かない、不活性の

動いたり何かをしたりすることができない。

やさしい英語で： Unable to move or do anything.

• The body lay inert on the floor.
• The machine remained inert after the power failed.
• She stared at the inert figure beside her.

類義語： motionless, lifeless

反対語： active

よく使う表現： inert body, inert object

無気力な、だるい

元気や意欲が乏しく、なかなか行動しない。

やさしい英語で： Having little energy and being slow to act.

• I felt inert after lunch.
• The heat left everyone tired and inert.
• His normally lively mind seemed inert that morning.

類義語： sluggish, lethargic, listless

反対語： energetic, lively

よく使う表現： feel inert, inert mind