Oxymoron

An (usual plural oxymorons, less commonly the Greek-style oxymora) is a figure of speech that juxtaposes elements that appear to be contradictory. Oxymorons appear in a variety of contexts, including inadvertent errors (such as "ground pilot") and literary oxymorons crafted to reveal a paradox.

The most common form of oxymoron involves an adjectivenoun combination of two words. For example, the following line from Tennyson's Idylls of the King contains two oxymorons:

And faith unfaithful kept him falsely true.

Other examples of oxymorons of this kind include: