English

Adjective

unloadable ‎(not comparable)

1. Not loadable; that cannot be loaded.
   • 1907, William Wellington Greener, The Gun and Its Development

     This was sometimes repeated again and again, the rings remaining in the rifling until the weapon was unloadable.

Etymology 2

unload +‎ -able

Adjective

unloadable ‎(not comparable)

1. Capable of being unloaded.
   • 1918, Annals of the American Academy of Political and Social Science

     With standardization, a type of car could be built that would be readily unloadable and fitted for a back haul.

   • 2001, Cheek et al, Tru64 UNIX System Administrator's Guide

     ...may or may not be dynamically unloadable...