abnormality

Noun

• behavior that breaches the rule or etiquette or custom or morality

• marked strangeness as a consequence of being abnormal

• retardation sufficient to fall outside the normal range of intelligence

• an abnormal physical condition resulting from defective genes or developmental deficiencies

Related words

• Synonyms: 
  irregularity , freakishness , mental defectiveness , abnormalcy
• Antonyms: 
  normality , normalcy