1. a person who advocates for or works toward ecumenism; someone who promotes unity among different Christian denominations or religions
Usage: formal; religious context

Examples

• The bishop was known as an ecumenicist who sought dialogue between Catholic and Protestant communities.
• Ecumenicists believe that religious divisions can be bridged through mutual respect and understanding.
• She dedicated her career as an ecumenicist, working to unite different faith traditions.
• The conference brought together ecumenicists from around the world to discuss interfaith cooperation.
• As an ecumenicist, he emphasized the common values shared by all Christian churches.