The word 'unclouded' is a transparent English formation built upon the native Germanic root 'cloud.' The original Old English sense of clūd referred to a rock or hill, perhaps metaphorically describing the solid, mound-like appearance of clouds. By the late Middle English period, the meaning had fully shifted to the meteorological phenomenon. The negative prefix 'un-,' one of the most common in the language, is added to reverse the meaning, and the adjectival suffix '-ed' completes the formation. Thus, the literal "not characterized by clouds" evolved naturally to describe both clear skies and, figuratively, a clear and untroubled state of mind.

Structure: un (not) + cloud (visible vapor in the sky) + ed (adjective suffix) - un: A prefix of Germanic origin (Old English un-), meaning "not." It functions as a negative particle. - cloud: A noun of Germanic origin (Old English clūd, meaning "mass of rock" or "hill," later shifting to "visible vapor"). In this compound, it functions as the core root. - ed: A suffix of Germanic origin (Old English -od, -ad), used to form adjectives from nouns, meaning "having the quality of" or "characterized by."