'Properness' definitions:

Definition of 'properness'

From: WordNet
noun
Correct or appropriate behavior [syn: propriety, properness, correctitude] [ant: improperness, impropriety]

Definition of 'Properness'

From: GCIDE
  • Properness \Prop"er*ness\, n. [1913 Webster]
  • 1. The quality of being proper. [1913 Webster]
  • 2. Tallness; comeliness. [Obs.] --Udall. [1913 Webster]