Where does “proselytize” come from?

Proselytize derives from English proselyte, which comes from French prose and Ancient Greek λύω meaning "to loosen," combined with the suffix -ίζειν to form a verb.

proselytize (English): To advertise one’s religious beliefs; to convert (someone) to one’s own faith or religious movement or encourage them to do so

Definitions

  1. To advertise one’s religious beliefs; to convert (someone) to one’s own faith or religious movement or encourage them to do so

Ancestry of “proselytize”, step by step

StepLanguageWordMeaning
1EnglishproselyteOne who has converted to a religion or doctrine,...
2EnglishproseLanguage, particularly written language, not...
3Frenchproseprose; inflection of proser: ##...
4Latinprōsaprose
5Latinprorsusstraightforward, right onwards, straight, direct;...
6Latinprōfor
7Latinratusconsidered, having been considered; established,...
8Latinrēōrto reckon, calculate
9Proto-Italicrēōrto reckon, to calculate; to think, to deem, to...
10Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
11Proto-Indo-Europeanh₂er-to fit, to fix, to put together

Words derived from “proselytize

Every word from Proto-Indo-European h₂er-
proselytize — Etymology, Origin & Word History | Etymology Explorer