Indisposable vs. Indispensable — What's the Difference?

Not disposable.

Absolutely necessary; essential.

Obligatory; unavoidable

One that is indispensable.

Not admitting ecclesiastical dispensation; not subject to release or exemption; that cannot be allowed by bending the canonical rules.

(of duties, rules etc.) Unbendable, that cannot be set aside or ignored.

Absolutely necessary or requisite; that one cannot do without.

A thing that is not dispensable; a necessity.

Trousers.

Not dispensable; impossible to be omitted, remitted, or spared; absolutely necessary or requisite.

Not admitting dispensation; not subject to release or exemption.

Unavoidable; inevitable.

Not to be dispensed with; essential;

Absolutely necessary; vitally necessary;

Unavoidable;