affirmation - definition and synonyms

noun [countable/uncountable] 

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/ˌæfə(r)ˈmeɪʃ(ə)n/
singularaffirmation
pluralaffirmations
  1. 1
    an action of support or approval

    All around the room heads were nodding in affirmation.

  2. 2
    formal a statement that something is true