the strong dislike of Christianity or the cruel and unfair treatment of Christians

He suggested that some politicians subscribed to a virulent form of anti-Christianity. 他表示，一些政客支持对基督教徒的残酷迫害。

There were accusations of anti-Christianity.

the religion of the Antichrist (= the enemy of Jesus Christ or of the Christian religion)

Wycliffe later identified the papacy with antichristianity. 威克里夫后来认定教皇是反基督教的。