Familiarity

Part of speech: noun (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.

Synonyms: Acquaintance; fellowship; affability; intimacy. See Acquaintance.