1. personal knowledge or information about someone or something

Similar word(s): acquaintance, conversance, conversancy

Definition categories: thought, information

2. usualness by virtue of being familiar or well known

Definition categories: attribute, usualness

3. close or warm friendship

Similar word(s): closeness, intimacy

Definition categories: attribute, friendliness

4. a casual manner

Similar word(s): casualness

Definition categories: attribute, informality

5. an act of undue intimacy

Similar word(s): impropriety, indecorum, liberty

Definition categories: act, misbehavior, misdeed