full-sized

The compound adjective "full-sized" is a transparent construction from native English elements. The first element, "full," derives from the Proto-Germanic fullaz, carrying the core sense of completeness. The second element originates from the noun "size," which entered English via Old French from a Vulgar Latin root referring to a regulated amount or limit. The combination "full-sized" emerged logically to describe an object possessing its complete, standard, or expected dimensions, as opposed to a scaled-down or miniature version. Its formation follows a common English pattern of combining an adjective with a participle to create a descriptive compound.

Structure: full (complete) + sized (having a size) - full: From Old English full, meaning "complete, entire, abundant." It functions as an adjective modifying the following element to indicate completeness. - sized: From the noun size (from Old French sise, "an ordinance, a fixing of amount") + the past participle suffix -ed, forming an adjective meaning "having a (specified) size."