clouding

The word 'clouding' is a transparent modern English formation. Its core, 'cloud', originates from the Old English 'clūd', which initially meant "a mass of rock" or "a hill." This sense evolved metaphorically in Middle English to describe the visible masses in the sky, as they were perceived as solid, rock-like formations. The addition of the agentive and gerundial suffix '-ing', from Old English '-ung', transforms the base into a noun denoting the specific process or result of becoming cloud-like—whether literally, as in a liquid losing clarity, or figuratively, as in thought becoming obscured.

Structure: cloud (mass of condensed water vapor) + ing (noun suffix) - cloud: From Old English 'clūd', meaning "mass of rock, hill," later "mass of condensed water vapor." In this word, it functions as the base noun/verb. - ing: A suffix of Germanic origin (Old English '-ung', '-ing') used to form nouns from verbs, indicating an action, process, or result.