反

anti-, opposition; going against

noun Rare #37,060
anti- A prefix meaning opposed to or against something.
JA: 彼は反原発運動に参加した。
EN: He joined the anti-nuclear movement.

反白人主義なんだね?

So you're anti-white, huh?

— マルコムX (1992)

何せあの方も反北軍だなあブロンディ?

After all, they're against the Northern Army too, aren't they, Blondie?

— 続・夕陽のガンマン (1966)

反白人主義でしょ?

You’re anti-white, right?

— マルコムX (1992)

noun Rare #42,979
opposition; going against Often used in 意志に反して, “against someone’s will.”
JA: 彼らは彼の意志に反して、彼に契約書に署名させた。
EN: They made him sign the contract against his will.

意志に反して何かを無理にさせる事はできない。

You can't force someone to do something against their will.

彼らは彼の意志に反して彼にその契約書に署名させた。

They forced him to sign the contract against his will.

私の考えは彼の考えに反するものだった。

My views were contrary to his.

あの「反」という言葉は、サンダラーの人たちが尋ねてきたことだった。

That word, “反,” was what the people of the Thunderers had come to ask about.