1. having knowledge or experience of something or someone
Usage: often used with ‘with’
2. having met someone but not knowing them well
Usage: describes casual relationships

Examples

• She became acquainted with the new software quickly.
• Are you acquainted with the local customs?
• We’re acquainted but not close friends.
• He’s well acquainted with the city’s history.
• I’m not acquainted with that author’s work.
• They became acquainted at the conference last year.
• She’s acquainted with several languages.