FAMILIARITY

n. 1 knowledge, acquaintance(ship), grasp, understanding, comprehension, cognizance, awareness, conversance, experience I have no familiarity at all with particle physics 2 friendliness, affability, sociability, neighbourliness, fellowship, intimacy, intimateness, closeness, openness, naturalness, ease, informality, unceremoniousness He prided himself on his familiarity with celebrities 3 boldness, presumptuousness, overfamiliarity, presumption, impudence, insolence, impertinence, impropriety He put his arm round her waist with offensive familiarity