learnable

The word "learnable" is a modern English formation, combining the native Germanic verb "learn" with the Latinate adjectival suffix "-able." The root "learn" originates from the Old English leornian, which carries the core sense of acquiring knowledge or skill through study. The suffix "-able," entering English via Old French from Latin -abilis, denotes capacity or susceptibility. Thus, the literal construction "capable of being learned" directly and logically yields the modern abstract meaning, describing a subject or skill that can be successfully acquired through the process of learning. This pattern of attaching "-able" to verbs is a highly productive method in English for creating adjectives that express passive potentiality.

Structure: learn + able - learn: From Old English leornian, meaning "to get knowledge, be cultivated; study, read, think about." It is a Germanic root. - able: From Latin -abilis, a suffix forming adjectives meaning "capable of, fit for, tending to." It functions as a productive adjectival suffix in English.