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blasphemy

Saying offensive things about God or religion is blasphemy. Blasphemy can be used for offensive ideas in other areas too.

If you're saying something bad about a god, or taking the Lord's name in vain, or questioning a religious institution in any way, you could be accused of blasphemy — insulting something sacred. You can use this word in a lot of other ways too. At a meeting of conservatives, a liberal idea could be considered blasphemy (and vice versa). You might even jokingly cry "Blasphemy!" if a friend said your favorite ice cream flavor stinks.

Definitions of blasphemy
  1. noun
    blasphemous language (expressing disrespect for God or for something sacred)
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    type of:
    discourtesy, disrespect
    an expression of lack of respect
    profanity
    vulgar or irreverent speech or action
  2. noun
    blasphemous behavior; the act of depriving something of its sacred character
    synonyms: desecration, profanation, sacrilege
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    type of:
    irreverence, violation
    a disrespectful act
Word Family
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