(also proselytise)
Definition of proselytize
verb
[with object] convert or attempt to convert (someone) from one religion, belief, or opinion to another:the programme did have a tremendous evangelical effect, proselytizing many [no object]:proselytizing for converts (as noun proselytizing)no amount of proselytizing was going to change their minds advocate or promote (a belief or course of action):Davis wanted to share his concept and proselytize his ideas