Non-prosecution refers to the act of not pursuing legal charges against someone. When it comes to synonyms for this term, you can use words like acquittal, dismissal, exoneration, immunity, pardon and absolution. These words indicate that the charges against the accused individual have been dropped for one reason or another, which could be due to lack of evidence, legal technicalities, or even an act of mercy. Another common term that is used as a synonym for non-prosecution is "dropped charges." All in all, a non-prosecution decision means that the accused person is not going to face punishment for the alleged crime.