potable

The word "potable" has a direct and logical lineage from Latin. It derives from the Latin verb 'potare', meaning "to drink," combined with the adjectival suffix '-abilis', which indicates capability or suitability. This formation, 'potabilis', literally meant "drinkable." The term entered English in the late Middle English period via Old French, retaining its core meaning. Its modern use, particularly in technical or formal contexts like "potable water," perfectly preserves this literal sense of being fit or safe for drinking, offering a clear semantic bridge from its ancient components.

Structure: pot (drink) + able (capable of) - pot: From Latin 'potare' (to drink). A bound root in English. - able: From Latin '-abilis' (capable of, able to). An adjective-forming suffix.