heresimach

[ huh-ree-zuh-mak, -suh-, her-uh-suh- ]
/ həˈri zəˌmæk, -sə-, ˈhɛr ə sə- /

noun

a person engaged in combating heresy and heretics.

Origin of heresimach

1815–25; < Late Greek hairesimáchos, equivalent to Greek haíresi(s) heresy + mách(ē) quarrel, battle (see -machy) + -os noun suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019