familiarity
/fəˌmɪliˈerəti/
noun
Britannica Dictionary definition of FAMILIARITY
[noncount]
1
:
the state of being familiar with something
:
the state of having knowledge about something
—
usually + with
◊ The expression familiarity breeds contempt means that knowing a lot about someone or something can cause you to like that person or thing less.
2
:
a friendly and informal way of acting or talking