indispensableness n 1: the quality possessed by something that you cannot possibly do without [syn: {indispensability}, {indispensableness}, {vitalness}] [ant: {dispensability}, {dispensableness}]
Indispensableness \In`dis*pen"sa*ble*ness\, n. The state or quality of being indispensable, or absolutely necessary. --S. Clarke. [1913 Webster]