1. (noun) personal knowledge or information about someone or something

• acquaintance
• conversance
• conversancy

2. (noun) close or warm friendship

• closeness
• intimacy

3. (noun) a casual manner

• casualness

4. (noun) an act of undue intimacy

• impropriety
• indecorum
• liberty

1. (noun) personal knowledge or information about someone or something

• information

2. (noun) usualness by virtue of being familiar or well known

• usualness

3. (noun) close or warm friendship

• friendliness

4. (noun) a casual manner

• informality

5. (noun) an act of undue intimacy

• misbehavior
• misbehaviour
• misdeed

1. (noun) a casual manner

• slanginess

1. (noun) personal knowledge or information about someone or something

• acquaint
• introduce
• present
• conversant
• conversant
• conversant
• familiar
• familiar
• familiar
• familiar
• intimate

2. (noun) usualness by virtue of being familiar or well known

• familiar
• familiar

3. (noun) close or warm friendship

• familiar
• intimate

4. (noun) a casual manner

• casual
• cursory
• passing
• perfunctory
• casual
• insouciant
• nonchalant
• casual
• effortless
• casual
• daily
• everyday
• casual
• free-and-easy
• casual
• fooling
• casual
• chance
• casual
• casual
• occasional

1. (noun) usualness by virtue of being familiar or well known

• strangeness
• unfamiliarity