noun (n)

• an abnormal physical condition resulting from defective genes or developmental deficiencies(noun.state)

  Synonym:
  abnormalcy
  Antonym:
  normalcy, normality
  

  source: wordnet30
• retardation sufficient to fall outside the normal range of intelligence(noun.cognition)

  Synonym:
  mental defectiveness
  

  source: wordnet30
• marked strangeness as a consequence of being abnormal(noun.attribute)

  Synonym:
  freakishness
  

  source: wordnet30
• behavior that breaches the rule or etiquette or custom or morality(noun.act)

  Synonym:
  irregularity
  

  source: wordnet30
• The state or quality of being abnormal; variation; irregularity.(noun)

  source: webster1913