plural heresies
: a belief or opinion that does not agree with the official belief or opinion of a particular religion
They were accused of heresy.
He was preaching dangerous heresies.
—often used figurativelyTo disagree with the party leadership was heresy.
Cite this Entry
“Heresy.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/heresy. Accessed 10 Jul. 2026.
Copy Citation
