eccentricity - definition and synonyms

noun 

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/ˌeksenˈtrɪsəti/
singulareccentricity
pluraleccentricities
  1. [uncountable] strange or unusual behaviour

    Mrs Morton was well known for her eccentricity.

    1. a.
      [countable] an idea, action, or habit that is strange or unusual

      Oh that’s just one of Carol’s little eccentricities.