To know; to be acquainted with (a person).
know inside and out
To know (something or someone) very thoroughly.
know the score
To be aware of a situation, especially of the consequences of miscondu…
know beans about
To know nothing, or almost nothing, about.
know someone from Adam
To know or recognize someone at all.
know every trick in the book
To know all there is to be known about a certain discipline.
know which side one's bread is buttered on
To be aware of where one's interests lie in a situation.