least-expensive

The compound adjective "least-expensive" is formed by directly combining the superlative adverb "least" with the adjective "expensive." "Least" originates from the Old English superlative form, solidifying its role as the ultimate indicator of minimal degree within the Germanic linguistic tradition. "Expensive" derives from the Latin expendere, meaning to weigh out or pay, reflecting the ancient practice of weighing money or goods for payment. The modern compound logically applies the concept of minimal degree ("least") directly to the quality of high cost ("expensive"), creating a straightforward term that identifies the item with the lowest financial outlay among a set.

Structure: least (superlative of little) + expensive (costing a lot of money) - least: From Old English læst, læsest, superlative of læssa (less). A Germanic root indicating the smallest amount or degree. - expensive: From the verb expend, via Medieval Latin expensivus, from Latin expendere (to weigh out, pay out). The suffix -ive forms adjectives meaning "tending to" or "having the nature of".