proselyte
noun
[ ˈprɒsɪlʌɪt ]
• a person who has converted from one opinion, religion, or party to another.
proselyte
verb
• another term for proselytize.
Origin:
late Middle English: via late Latin from Greek prosēluthos ‘stranger, convert’, from prosēluth-, past stem of proserkhesthai ‘approach’.