noun (n)

• conformity with conventional thought and behavior(noun.cognition)

  source: wordnet30
• unoriginality as a result of being too conventional(noun.cognition)

  source: wordnet30
• orthodoxy as a consequence of being conventional(noun.attribute)

  Synonym:
  convention, conventionalism
  Antonym:
  unconventionality
  

  source: wordnet30
• The state of being conventional; adherence to social formalities or usages; that which is established by conventional use; one of the customary usages of social life.(noun)

  source: webster1913