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Definition of indispensable:

  1. Not admitting dispensation; not subject to release or exemption.
  2. Not dispensable; impossible to be omitted, remitted, or spared; absolutely necessary or requisite.
  3. Unavoidable; inevitable.


intrinsic, congenital, native, inherent, inhering, basic, critical, substantive, of necessity, all-important, needful, immanent, ingrained, at all costs, inbred, without fail, indwelling, natural, obligatory, crucial, necessitous, inborn, study at essential, innate, important, internal, inwrought, inseparable, vital, integral, needed, infixed, of the essence, essential, subjective, must-have.

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