heresy
[noun]
Synonyms: dissidence, apostasy, heterodoxy, iconoclasm, unorthodoxy

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Related Words: impiety, infidelity, apostasy, defection, revisionism, error, fallacy

[TahlilGaran] English Synonym Dictionary ▲

her‧e‧sy /ˈherəsi, ˈherɪsi/ noun (plural heresies) [uncountable and countable]
[Date: 1100-1200; Language: Old French; Origin: heresie, from Late Latin haeresis, from Greek hairesis 'act of taking or choosing']

1. a belief that disagrees with the official principles of a particular religion:
He was executed for heresy.

2. 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.

[TahlilGaran] Dictionary of Contemporary English ▲