traditor

noun, plural trad·i·to·res [trad-i-tawr-eez, –tohr-] /ˌtræd ɪˈtɔr iz, -ˈtoʊr-/.

1. an early Christian who betrayed other Christians at the time of the Roman persecutions.

noun plural traditores (ˌtrædɪˈtɔːriːz) or traditors

1. Early Church a Christian who betrayed his fellow Christians at the time of the Roman persecutions