環かん境きょう保ほ護ご主しゅ義ぎ者しゃMeaningsNoun1. environmentalistKanji used環loop境border保preserve護keep safe主(one's) master義justice者someoneComposed of環かん境きょう保ほ護ごenvironmental protectionNoun主しゅ義ぎ者しゃadvocate (of a theory or principle); ideologist; ideologue; -ist (i.e. adherent to a belief system)Noun