inactive

活動していない、休止中の

今は、またはすでに、動作や活動をしていない、あるいは使われていない様子。

やさしい英語で： Not working, being used, or producing activity at the moment or anymore.

• The account is inactive.
• This volcano has been inactive for centuries.
• Unused accounts become inactive after six months.

類義語： dormant, unused, idle

反対語： active

よく使う表現： inactive account, inactive volcano, remain inactive, inactive machine

運動不足の、体を動かさない

あまり体を動かさず、運動をしない様子。

やさしい英語で： Not moving much or taking part in physical exercise.

• He is physically inactive.
• An inactive lifestyle can affect your health.
• She became less inactive after joining a walking group.

類義語： sedentary, idle

反対語： active

よく使う表現： physically inactive, inactive lifestyle, inactive people

非現役の、退役した

軍などの組織で、通常の勤務や任務をもう行っていない様子。

やさしい英語で： No longer doing regular duties in the military or another service.

• The officer is now inactive.
• He was placed on the inactive list.
• Members of the inactive reserve may be called back to duty.

類義語： nonactive

反対語： active

よく使う表現： inactive reserve, inactive status, inactive list

不活性の、反応しにくい

他の物質と接触しても、化学変化を起こしにくい様子。

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

• The gas is chemically inactive.
• This metal remains inactive in cold water.
• The coating makes the surface inactive toward many acids.

使い方： inactive toward something (The metal is inactive toward water under these conditions.)

類義語： inert, unreactive

反対語： reactive

よく使う表現： chemically inactive, inactive metal, inactive toward water