cloudburst

The word 'cloudburst' is a transparent English compound formed from two native Germanic elements. The first element, 'cloud', evolved in meaning from its Old English sense of a "hill" or "rock mass" to its modern meteorological sense, metaphorically shifting from something solid and earthly to something ethereal and atmospheric. The second element, 'burst', retains its core sense of a sudden, explosive breaking or release. When combined, the term creates a vivid, literal image of the sky or a cloud suddenly breaking open to release its contents, which perfectly captures the phenomenon of an intense, localized downpour. This descriptive logic makes the modern abstract meaning immediately understandable from its constituent parts.

Structure: cloud + burst - cloud: From Old English 'clūd', meaning "mass of rock, hill; mass of condensed water vapor in the sky." In this compound, it refers to the sky or the source of rain. - burst: From Old English 'berstan', meaning "to break suddenly, shatter." In this compound, it signifies a sudden, violent release or outbreak.