Search Result for "dispensability": 
Wordnet 3.0

NOUN (1)

1. the quality possessed by something that you can get along without;
[syn: dispensability, dispensableness]



WordNet (r) 3.0 (2006):

dispensability
    n 1: the quality possessed by something that you can get along
         without [syn: dispensability, dispensableness] [ant:
         indispensability, indispensableness, vitalness]