one-person

The compound adjective 'one-person' is a transparent modern English formation combining the numeral 'one' with the noun 'person'. 'One' descends from a stable Germanic root signifying singularity. 'Person' has a more complex journey, originating from the Latin 'persona', which denoted a theatrical mask and, by extension, a role or character, before evolving to mean an individual human being. The logic of the compound is straightforward and literal, directly applying the ancient concept of "a single" entity to the later concept of an "individual human" to describe anything involving or designed for just one person.

Structure: one (single) + person (individual) - one: From Old English 'ān', meaning "one, a single". A numeral root of Germanic origin, ultimately from Proto-Indo-European óynos. - person: From Old French 'persone', from Latin 'persona', meaning "human being, individual, person". Originally referred to a theatrical mask, then the character played, and later the individual.