acquaintance

the word 'acquaintance' originates from the old french verb 'acointer', which itself evolved from the vulgar latin 'accognitare', a frequentative form of 'accognoscere' meaning 'to know well'. this latin root is a compound of 'ad-' (to) and 'cognoscere' (to know, learn). the suffix '-ance' was added in french, derived from latin '-antia', to form a noun indicating the state or condition of knowing. thus, the literal sense of 'acquaintance' is the state of being known or knowing someone, which evolved to denote both the knowledge itself and, by metonymy, the person with whom one shares that state of familiarity.

Structure: acquaint + ance acquaint (from old french 'acointer', meaning 'to make known', ultimately from latin 'accognitare', 'to know well'); ance (noun-forming suffix from latin '-antia', denoting a state or quality)