frigid

the word frigid entered english in the late 15th century, directly from the latin adjective frigidus, meaning cold, chill, which itself derives from the latin noun frigus (coldness, frost). the root can be traced further back to the proto-indo-european root srig-, srih-, which conveyed a sense of cold. the semantic journey is remarkably direct: the core meaning of physical coldness has persisted from its ancient origins. over time, the word developed figurative extensions, applying the quality of coldness to describe a lack of warmth in personality, formality in style, and, by the mid-17th century, a lack of sexual passion, completing its path from describing a physical state to encompassing psychological and behavioral attributes.

Structure: frig (cold) + id (adjective suffix) frig originates from latin frigus, meaning cold, frost. id is a latin adjectival suffix meaning having the quality of, related to.