Topic: RELIGION
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| Date: | 1100-1200 |
| Language: | Old French |
| Origin: | heresie, from Late Latin haeresis, from Greek hairesis 'act of taking or choosing' |
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her‧e‧sy
plural heresies [uncountable and countable]
plural heresies [uncountable and countable]1RR a belief that disagrees with the official principles of a particular religion : 
He was executed for heresy.
He was executed for heresy.2P a belief, statement etc that disagrees with what a group of people believe to be right : To come to work without a shirt and tie was considered heresy.
To come to work without a shirt and tie was considered heresy.