- Not dispensable; impossible to be omitted, remitted, or spared; absolutely necessary or requisite.
- (context, ecclesiastical) Not admitting dispensation; not subject to release or exemption.
Etymology: in- not + dispensable: compare French indispensable
- The law was moral and . -Bp. Burnet
- (obsolete): Unavoidable; inevitable.
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Full Definition of indispensable