Indispensability

Full definition of indispensability

Noun

1. The characteristic of being indispensable.
• 1869, Charles Dickens The Uncommercial Traveller, ch. 11:In thinly-peopled spots, I have known brick-layers on tramp, coming up with bricklayers at work, to be so sensible of the indispensability of lookers-on, that they themselves have sat up in that capacity, and have been unable to subside into the acceptance of a proffered share in the job, for two or three days together.