ac ‧ quaint ‧ ed /əˈkweɪntəd, əˈkweɪntɪd/ BrE AmE adjective [not before noun]
1 . if you are acquainted with someone, you have met them a few times but do not know them very well
acquainted with
Were you acquainted with a friend of mine, Daniel Green?
We would like to get better acquainted.
2 . be acquainted with something formal to know about something, because you have seen it, read it, used it etc:
She was well acquainted with classical literature.