all-round

The compound 'all-round' is a relatively modern English formation, emerging in the 19th century. It combines the universal inclusivity of 'all,' a word of Proto-Germanic origin, with 'round,' which entered English via French from the Latin rotundus, itself from the PIE root ret- meaning "to run, roll." The logic of the word is vividly spatial: the concept of being 'round' in all dimensions evolved from a literal circular shape to a metaphorical sense of completeness and versatility. Thus, an 'all-round' athlete or solution is one that is complete, covering all aspects or positions, much like a sphere encompasses all directions from its center.

Structure: all + round - all: From Old English eall, meaning "entire, whole, every." It functions as an intensifier and quantifier in this compound. - round: From Old French rond, from Latin rotundus ("round, circular"). In this compound, it functions metaphorically to imply completeness in all aspects or directions.