familiarity
1 acquaintance, acquaintanceship, awareness, experience, grasp, understanding
2 absence of reserve, closeness, ease, fellowship, freedom, friendliness, friendship, informality, intimacy, naturalness, openness, sociability, unceremoniousness
3 boldness, disrespect, forwardness, liberties, liberty, presumption
Antonyms
constraint, decorum, distance, formality, ignorance, inexperience, propriety, reserve, respect, unfamiliarity