Acquainted; personally or mutually known: as, we are not acquaint.To cause to have acquaintance or be more or less familiar; make conversant: used with with: as, to acquaint one's self, or make one's self acquainted, with a subject; to make persons (to be) acquainted with each other.To furnish with knowledge or information (about); make conversant by notice or communication: with with before the subject of information, and formerly sometimes with of: as, to acquaint a friend with one's proceedings.Synonyms To acquaint (with), make known (to), familiarize (with), introduce (to). To inform (of), communicate (to), apprise (of), mention (to), signify (to), intimate (to), disclose (to), reveal (to), tell (to). See announce and inform.To become acquainted.n. An acquaintance.