Heresy meaning

hĕr'ĭ-sē
The definition of heresy is a belief or action at odds with what is accepted, especially when the behavior is contrary to religious doctrine or belief.

An example of heresy is a Catholic who says God does not exist.

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The holding of any such belief or opinion.
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Any opinion (in philosophy, politics, etc.) opposed to official or established views or doctrines.
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(religion) A doctrine held by a member of a religion at variance with established religious beliefs, especially dissension from Roman Catholic dogma.
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A controversial or unorthodox opinion held by a member of a group, as in politics, philosophy or science.
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Origin of heresy

  • Middle English heresie from Old French from Late Latin haeresis from Late Greek hairesis from Greek a choosing, faction from haireisthai to choose middle voice of hairein to take
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Old French heresie (modern hérésie), from Latin haeresis, from Ancient Greek αἵρεσις (hairesis, “choice, system of principles”), from αἱρέομαι (haireomai, “to take for one’s self, to choose”), the middle voice of αἱρέω (haireō, “to take”), from Proto-Indo-European *ster-; see also Welsh herw (“theft, raid”), Ancient Greek στερέω (stereō, “to deprive of”).
    From Wiktionary