Familiarity

n.	1.	The state of being familiar; intimate and frequent converse, or association; unconstrained intercourse; freedom from ceremony and constraint; intimacy; as, to live in remarkable familiarity.
	2.	Anything said or done by one person to another unceremoniously and without constraint; esp., in the pl., such actions and words as propriety and courtesy do not warrant; liberties.

Noun	1.	familiarity - personal knowledge or information about someone or something Synonyms: acquaintance, conversance, conversancy
	2.	familiarity - usualness by virtue of being familiar or well known Antonyms: strangeness, unfamiliarity - unusualness as a consequence of not being well known
	3.	familiarity - close or warm friendship; "the absence of fences created a mysterious intimacy in which no one knew privacy" Synonyms: intimacy, closeness
	4.	familiarity - a casual manner Synonyms: casualness
	5.	familiarity - an act of undue intimacy Synonyms: indecorum, impropriety, liberty

Bohemianism, affability, affinity, amiability, assumption, boldness, casualness, chumminess, civility, closeness, clubbability, clubbishness, clubbism, cognition, cognizance, common touch, communicativeness, companionability, compatibility, comprehension, congeniality, cordiality, corpus, courtesy, data, datum, ease, easiness, easygoingness, experience, expertise, facts, factual base, fellowship, folksiness, fondness for society, friendliness, geniality, graciousness, grasp, gregariousness, homeliness, homeyness, hospitality, hubris, impertinence, imposition, impropriety, impudence, informality, informalness, information, inseparableness, insolence, intelligence, intimate acquaintance, inwardness, irregularity, ken, know-how, knowing, knowledge, lawlessness, liberties, liberty abused, license, licentiousness, looseness, mateyness, naturalness, nearness, offhandedness, openness, palliness, plainness, practical knowledge, presumptuousness, private knowledge, privity, ratio cognoscendi, relaxedness, self-knowledge, simplicity, sociableness, social grace, sociality, special affinity, technic, technics, technique, unaffectedness, unceremoniousness, unconstrainedness, unconstraint, unconventionality, undue liberty, unpretentiousness, urbanity