The word 'steamed' is built upon the Old English noun 'stēam', which referred to vapor or exhalation, particularly from a hot liquid. This Germanic root is related to the Dutch 'stoom' and carries the core sense of hot, gaseous water. The addition of the adjectival suffix '-ed', a common Germanic formative, creates a participle that describes the state of having been subjected to steam. In its primary culinary sense, it directly conveys the cooking method. The informal figurative sense of being 'very angry' is a vivid metaphorical extension from the early 20th century, picturing a person's agitation as akin to the pent-up pressure and heat of a steam engine or boiler.

Structure: steam (vapor) + ed (adjective suffix) - steam: From Old English 'stēam' (vapor, hot exhalation), of Germanic origin. - ed: A suffix forming adjectives from verbs or nouns, from Old English '-ed', '-od', '-ad'.