acquaintance

Universal Words noun 1 [C] a person that you know but who is not a close friend: Claire has a wide circle of friends and acquaintances. * He's just a business acquaintance. * I bumped into an old acquaintance on the train. 2 [U,C] ~ (with sb) (formal) slight friendship: He hoped their acquaintance would develop further. 3 [U,C] ~ with sth (formal) knowledge of sth: I had little acquaintance with modern poetry. IDIOMS make sb's acquaintance