Deallocate vs. Unallocated

Deallocateverb

(transitive) To remove from the set of resources put aside for (allocated to) a particular user or purpose.

‘Empty out your locker; it will be deallocated at the end of the day.’; ‘Computer programs should deallocate memory they no longer need, releasing it back to the system.’;

Unallocatedadjective

That has not yet been allocated.