unused

The word "unused" combines the prefix "un-" (Old English "un-," meaning "not") with the root "use" (from Old French "user," meaning "to employ") and the suffix "-ed" (forming adjectives). It originally described objects or resources not in active employment, later extending metaphorically to describe a lack of habitual exposure (e.g., "unused to hardship"). The logical progression reflects negation ("un-") applied to the state of utility ("use").