proselytism

The word's journey begins with the Greek 'prosēlytos', meaning "one who has arrived" or "newcomer," derived from the verb 'proserchesthai' (to come to, approach). In the Greek Septuagint translation of the Hebrew Bible, it was used specifically for a "stranger" who had settled in Israel and adopted the Jewish faith, thus taking on the specialized meaning of a religious convert. Entering English via Late Latin 'proselytus' and French 'prosélyte', the core term referred to the converted individual. The addition of the productive suffix '-ism', denoting an action or practice, transformed it in the 17th century from the person ("proselyte") to the active process or principle of seeking converts. The modern meaning logically extends from this historical focus on religious conversion to include any zealous effort to recruit people to a particular cause or doctrine.

Structure: proselyt (convert) + ism (doctrine/practice) proselyt: From Greek 'prosēlytos' (a newcomer, stranger, convert), via Late Latin and French. It functions as the core root denoting a convert. ism: A suffix of Greek origin (via Latin '-ismus'), forming nouns indicating a practice, system, or doctrine.