indispensable Meaning, Definition & Usage

  1. adjective not to be dispensed with; essential
    • foods indispensable to good nutrition
  2. adjective satellite absolutely necessary; vitally necessary
    essential.
    • essential tools and materials
    • funds essential to the completion of the project
    • an indispensable worker
  3. adjective satellite unavoidable
    • the routine but indispensable ceremonies of state

WordNet

In`dis*pen"sa*ble adjective
Etymology
Pref. in- not + dispensable: cf. F. indispensable.
Definitions
  1. Not dispensable; impossible to be omitted, remitted, or spared; absolutely necessary or requisite.
  2. (Eccl.) Not admitting dispensation; not subject to release or exemption. R.
    The law was moral and indispensable. Bp. Burnet.
  3. Unavoidable; inevitable. Obs. Fuller.

Webster 1913