Incommutable

[,inkә'mju:tәbl]

(adj.) not subject to alteration or change .

(adj.) not interchangeable or able to substitute one for another; 'a rare incommutable skill' .

Editor: Michel--From WordNet

(a.) Not commutable; not capable of being exchanged with, or substituted for, another.

Typed by Floyd

adj. that cannot be commuted or exchanged.—ns. Incommutabil′ity Incommut′ableness.—adv. Incommut′ably.

Inputed by Lewis