define familiarity
Familiarity is the state of knowing something very well. It's also a casual way of behaving. Your familiarity with your best friend means that you can say whatever you want around her. Familiarity is from the Latin word familiaritatem for intimacy, friendship.â Familiarity is used in situations that people know well. A painter has a familiarity with brushes and canvas. When thereâs familiarity with a task, people arenât stressed, because theyâve done it before.