'Conventionality' definitions:

Definition of 'conventionality'

From: WordNet
noun
Conformity with conventional thought and behavior
noun
Unoriginality as a result of being too conventional [ant: unconventionality]
noun
Orthodoxy as a consequence of being conventional [syn: conventionality, convention, conventionalism] [ant: unconventionality]

Definition of 'Conventionality'

From: GCIDE
  • Conventionality \Con*ven`tion*al"i*ty\, n.; pl. Conventionalities. 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. [1913 Webster]