refillable

The word 'refillable' is a modern English compound built from three distinct morphemes. The prefix 're-', from Latin, introduces the core concept of repetition. It is attached to the Old English verb 'fill', which derives from the Proto-Germanic fullijaną, meaning "to make full," itself from the Proto-Indo-European root pelh₁- ("to fill"). Finally, the suffix '-able', entering English via Old French from the Latin -ābilis, adds the sense of "capable of undergoing the action." Thus, the literal morphemic logic "capable of being filled again" directly and transparently yields the modern abstract meaning of an object designed for reuse.

Structure: re (again) + fill (to make full) + able (capable of) - re: Latin origin, a prefix meaning "again" or "back." - fill: Old English origin (from fyllan), a verb root meaning "to make full." - able: Latin origin (via Old French -able), a suffix forming adjectives meaning "capable of, fit for, or worthy of."