Addable

Part of speech: adjective

Definitions

1. Possible to incorporate extra parts into an existing structure
2. Suitable for being attached or integrated with additional features
3. Able to have something extra included or put into it

Etymology: "Addable" is a plain formation: the verb "add" with the suffix "-able," meaning "capable of being." The suffix came into English through Old French "-able" (from Latin "-abilis," itself built on the verb-forming "-ā-" plus "-bilis"), arriving in Middle English as "-able," where it became productive enough to attach to native verbs like "add." The Latin root of "add" is "addere," meaning "to put to" or "to join to," from "ad" ("to") and "dare" ("to give" or "put"), so the word literally describes something that can be put to something else. Words with "-able" are a large family, and many were formed in English long after the suffix arrived, so "addable" is one of the many productive uses of the ending rather than a word with a separate history of its own.

Synonyms: supplementary, extra

Antonyms: subtractable, removable