The compound adjective 'stretched-out' is built from the Germanic verb 'stretch', which carries the ancient sense of making something taut or long, and the directional adverb 'out', implying expansion away from a center. The '-ed' suffix transforms this verbal phrase into an adjective, describing a state of having been extended. The literal meaning of something physically pulled to its limits evolved metaphorically to describe anything prolonged in time or space, such as a lengthy journey or an overlong narrative. This development follows a common pattern where a physical action becomes a descriptor for abstract qualities of duration or extent.

Structure: stretch (to extend) + out (outward) + ed (adjective suffix) - stretch: From Old English streccan (to stretch, extend), of Germanic origin. Its functional role is the core verb meaning. - out: From Old English ūt (out, outward, outside), of Germanic origin. Its functional role is an adverbial particle modifying the verb. - ed: A past participle suffix from Old English -ed, -od, -ad, used here to form a participial adjective.