a person sent by a church into an area to carry on evangelism or other activities, as educational or hospital work.

a person strongly in favor of a program, set of principles, etc., who attempts to persuade or convert others.

a person who is sent on a mission.

pertaining to or connected with religious missions.

engaged in such a mission, or devoted to work connected with missions.

reflecting or prompted by the desire to persuade or convert others

the missionary efforts of political fanatics.

characteristic of a missionary.

noun

apostle , clergy , clergyperson , converter , evangelist , herald , messenger , minister , missioner , pastor , preacher , promoter , propagandist , proselytizer , revivalist , teacher

adjective

apostolic