资料来源 : Webster's Revised Unabridged Dictionary (1913)

Sociableness \So"cia*ble*ness\, n.
   The quality of being sociable.

资料来源 : WordNet®

sociableness
     n : the relative tendency or disposition to be sociable or
         associate with one's fellows [syn: {sociability}] [ant: {unsociability}]