I would never act as an informer against you.

我永远也不会做对你不利的告密者。

youdao

One businessman says it happened because the man was an informer.

一个商人表示，之所以发生此事是因为这名男子是一个告密者。

youdao

What is the relationship? Is he merely an informer, giving information to the child? Any machine can do that.

那关系是什么？他只是个教导者，给孩子知识吗？机器都能做到这点。

youdao

He denied allegations that the police were protecting Mr Breen because he was an informer.

BBC: Constable Stephen Carroll

Once an informer for the CIA, Noriega was arrested by US troops after their invasion of Panama in 1989.

BBC: Panama's Manuel Noriega convicted by French court

An informer whose evidence put dozens of alleged republican paramilitaries before the courts has returned to his home city of Londonderry.

BBC: IRA 'supergrass' Raymond Gilmour returns to Londonderry