What prefix can you add to dispensable?

Here are a few prefixes you can add to "dispensable" to create new words with different meanings:

* In-: Indispensable (absolutely necessary)

* Un-: Undispensable (essential, not able to be done without)

* Non-: Nondispensable (same meaning as "indispensable")

These prefixes change the meaning of "dispensable" from "able to be done without" to "not able to be done without."