It's pronounced "vɑ̃ʒɑ̃s".
However, there are other words in French that can convey the same meaning depending on the context:
* "Revanche" is used when referring to a specific act of revenge, often in the context of a conflict or competition.
* "Vindicte" is a more formal and legalistic term, often referring to the punishment of a crime.
Ultimately, the best word to use depends on the specific situation.