blaspheme - definition and synonyms

verb [intransitive] 

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/ˌblæsˈfiːm/
present tense
I/you/we/theyblaspheme
he/she/itblasphemes
present participleblaspheming
past tenseblasphemed
past participleblasphemed
  1. to say offensive things about God or someone’s religious beliefs
    1. a.
      old-fashioned to swear using God’s name in a way that offends people

derived word

blasphemer

noun [countable]
singularblasphemer
pluralblasphemers