Uncompounded

Part of speech: adjective

Definitions

1. Having no combination with other substances or elements
2. Referring to something that is presented in its original, singular form without alterations or mixtures
3. Lacking any mixture or combination with other components

Etymology: The prefix "un-" has been in English since Old English, but it is far older than that: it descends from a Proto-Indo-European root meaning "not," which passed through Proto-Germanic and Proto-West Germanic before reaching the Old English of the Anglo-Saxons. Its job was simple negation, and it could attach to almost any word, which is why English speakers have never run short of ways to say that something is not something else. "Uncompounded" is a plain formation of this kind: "un-" joined to "compounded," the past participle of "compound," meaning put together from parts. Something uncompounded is one substance or element that has not been joined with another to form a compound. The word is a technical coinage built from transparent English parts, so its meaning follows directly from them.

Synonyms: simple, pure, elemental, unmixed, unblended

Antonyms: compound, complex, composite, mixed, blended