Indispensable

[Sarah]

Not admitting dispensation; not subject to release orexemption. [R.]The law was moral and indispensable. Bp. Burnet.

[Sarah]

1. necessary: extremely desirable or useful, or not to be done without

2. having to be faced: unavoidable, especially as a duty

[Cami]

No matter how hard someone tries to dispense of one, they do not [go way]. Being so stupid a group cannot dispense them no matter how hard they try. Isnt aware of the lack of [value added] by oneself. Too stupid to fire. Too stupid to understand this is not a [complement].

[Julian]

Absolutely necessary.

[Monty]

Something or someone that is indispensable is so good or important that you could not manage without it, him, or her: