active

活動的な、積極的な

よく体を動かし、運動やさまざまな活動に参加すること。

やさしい英語で： Often moving, exercising, or taking part in activities.

• My grandmother is very active.
• He stays active by swimming.
• They are active members of our club.

使い方： active in something (She is active in local politics.)

類義語： energetic, busy, involved

反対語： inactive

よく使う表現： active lifestyle, active member, physically active

有効な、作動中の

起動され、動いているか、使える状態になっていること。

やさしい英語で： Working or ready to work because it has been switched on or started.

• Your account is now active.
• Only one connection was active.
• Is the alarm still active?

類義語： operating, enabled

反対語： inactive

よく使う表現： active account, active connection, active alarm

作用する、有効な

影響を受けるだけでなく、自ら働いて変化を起こすこと。

やさしい英語で： Able to act or produce a change instead of simply receiving an effect.

• The active ingredient kills bacteria.
• Heat destroys some active substances in the mixture.
• The drug contains two active chemicals.

類義語： effective, acting

反対語： passive, inert

よく使う表現： active ingredient, active agent, active substance

能動の

文の主語が動作を行うことを表す文や動詞の形。

やさしい英語で： Describing a sentence or verb form in which the subject performs the action.

• This sentence is active.
• Try writing the instructions in the active voice.
• The teacher changed the passive verbs into active ones.

反対語： passive

よく使う表現： active voice, active verb, active sentence

活発な、盛んな

動きや関心が多く、商売などが盛んに行われていること。

やさしい英語で： Showing a lot of movement, interest, or business activity.

• There is an active market for old toys.
• Trade remained active throughout the winter.
• The town has an active nightlife.

類義語： lively, brisk

反対語： quiet, slow

よく使う表現： active market, active demand, active trade