1. the quality or state of being atypical; deviation from what is normal or expected

Examples

• The atypicality of his behavior concerned his teachers.
• Researchers noted the atypicality of the weather patterns this year.
• The doctor explained that the atypicality of her symptoms made diagnosis difficult.
• The atypicality of the architectural design made the building stand out.
• Scientists studied the atypicality of the genetic mutation.
• The atypicality of the test results required further investigation.