'Sociableness' definitions:

Definition of 'sociableness'

From: WordNet
noun
The relative tendency or disposition to be sociable or associate with one's fellows [syn: sociability, sociableness] [ant: unsociability, unsociableness]

Definition of 'Sociableness'

From: GCIDE
  • Sociableness \So"cia*ble*ness\, n. The quality of being sociable. [1913 Webster]