Definition of "proselyte"
One who has converted to a religion or doctrine, especially a gentile converted to Judaism.
Quotations
That evening the young nun lay exhausted between life and death in a brain fever, while all Naples was ringing with the faith, beauty, and fervour of the English proselyte.
1831, L[etitia] E[lizabeth] L[andon], chapter X, in Romance and Reality. […], volume III, London: Henry Colburn and Richard Bentley, […], page 218
verb
third-person singular simple present proselytes, present participle proselyting, simple past and past participle proselyted