irreversible

元に戻せない、不可逆の

変化する前の状態に戻せない。

やさしい英語で： Unable to return to the condition that existed before a change.

• The fire caused irreversible damage.
• The disease can lead to irreversible hearing loss.
• Some changes to the landscape are irreversible.

類義語： permanent, lasting

反対語： reversible

よく使う表現： irreversible damage, irreversible change, irreversible loss

取り消せない、不可逆の

起きたことや決まったことを取り消せない。

やさしい英語で： Unable to be canceled or undone once it has happened or been decided.

• This decision is irreversible.
• Signing the agreement was an irreversible step.
• Consider the consequences before making an irreversible commitment.

類義語： irrevocable, final

反対語： reversible

よく使う表現： irreversible decision, irreversible step, irreversible commitment

不可逆的な

エネルギー消費と乱雑さの増加なしには完全に逆転できない物理過程。

やさしい英語で： Describing a physical process that cannot be fully reversed without using energy and increasing disorder.

• Friction makes the process irreversible.
• The gas underwent an irreversible expansion.
• An irreversible process increases the total entropy of the system and its surroundings.

反対語： reversible

よく使う表現： irreversible process, irreversible expansion, irreversible heat transfer

逆転できない

反対方向に動いたり作動したりできない。

やさしい英語で： Unable to move or operate in the opposite direction.

• The mechanism is irreversible.
• They installed an irreversible gear to prevent backward movement.
• This irreversible engine cannot run in the opposite direction.

類義語： nonreversible

反対語： reversible

よく使う表現： irreversible engine, irreversible gear, irreversible mechanism