Underlight

Part of speech: verb, noun

Definitions

1. Illumination that comes up from beneath an object or face, often used to create dramatic shadows on a stage or in photography
2. The glow cast upward from a source positioned below something, lighting it from underneath rather than from above
3. Light directed from a low position so that it falls on a surface or figure from underneath and alters how it appears

Etymology: "Underlight" is a plain compound of "under" and "light," built from two good Old English roots. "Under" comes from the Old English "under," meaning beneath or below, and "light" in the sense of illumination carries the same ancient sense of brightness it has in everyday English. Put together, the word describes light that falls upward from below a surface or object, the way a lamp set under a face or a stage footlight throws shadows upward across it. Because the parts are so transparent, the word stays close to its literal meaning. It is used as both a verb and a noun, so one can underlight a building or speak of the underlight on a ceiling. The compound is not a coinage with a famous backstory, so its interest lies mainly in how neatly the two common elements describe an effect that otherwise needs a longer phrase.