主義者|しゅぎしゃshugisha

1. nounadvocate (of a theory or principle); ideologist; ideologue
2. noun (suffix)-ist (i.e. adherent to a belief system)
3. nounsocialist; communist; anarchist

• Synonym主張者しゅちょうしゃNeutralFor someone who asserts a particular view or claim; 「主義者」 implies adherence to a whole system of thought rather than one individual position.
• Synonym擁護者ようごしゃNeutralA defender or supporter who upholds a position, as in 「人権擁護者」; the emphasis is on backing or protecting it, not on believing an ideology.
• Synonym主唱者しゅしょうしゃWrittenWritten/formal: someone who vigorously champions a view or movement, not necessarily its originator; 「主義者」 stresses adherence to the belief.

Use 「主義者」 for a believer in an -ism, often as a suffix like 「平和主義者」 or 「完璧主義者」; pick 「主張者」 for an individual claim, 「主唱者」 for a leading advocate, 「擁護者」 for a defender.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 理念りねんに基もとづいた一定いっていの主張しゅちょうあるいは一定いっていの思考しこう体系たいけいを持もつ人ひと。
2. （古用ふるもち）左翼さよく思想しそうを持もつ人ひと。社会主義者しゃかいしゅぎしゃ。共産きょうさん主義者しゅぎしゃ。