noun (n)

• the quality of conforming to standards of propriety and morality(noun.attribute)

  Antonym:
  indecency
  

  source: wordnet30
• the quality of being polite and respectable(noun.attribute)

  source: wordnet30
• The quality or state of being decent, suitable, or becoming, in words or behavior; propriety of form in social intercourse, in actions, or in discourse; proper formality; becoming ceremony; seemliness; hence, freedom from obscenity or indecorum; modesty.(noun)

  source: webster1913