Noah Webster's Dictionary 1. (a.) Impossible to be omitted, absolutely necessary or requisite. 2. (a.) Not admitting dispensation; not subject to release or exemption. 3. (a.) Unavoidable; inevitable.

Multi-Version Concordance Indispensable (1 Occurrence) 1 Corinthians 12:22 No, it is quite otherwise. Even those parts of the body which are apparently somewhat feeble are yet indispensable; (WEY RSV NIV)