the word 'spreadable' is a modern english formation built upon the old english verb 'sprǣdan', which itself has germanic origins related to the idea of stretching or extending something flat. the suffix '-able', of latin origin via french, was productively attached to verbs in middle english to create adjectives meaning "capable of undergoing the action of the verb." therefore, the literal morphemic logic of "capable of being spread" directly and transparently informs its modern meanings, primarily describing the physical property of a substance like butter or cheese, or more abstractly, the potential for distribution.

Structure: spread (to extend) + able (capable of) spread (from old english 'sprǣdan', meaning to stretch out, extend; functions as the verb root). able (from latin '-abilis', via old french '-able', meaning capable of, fit for; functions as an adjective-forming suffix).