'Constructiveness' definitions:

Definition of 'constructiveness'

From: WordNet
noun
The quality of serving to build or improve [ant: destructiveness]

Definition of 'Constructiveness'

From: GCIDE
  • Constructiveness \Con*struct"ive*ness\, n.
  • 1. Tendency or ability to form or construct. [1913 Webster]
  • 2. (Phren.) The faculty which enables one to construct, as in mechanical, artistic, or literary matters. [1913 Webster]