acquainted with, conversant with, well-acquainted with, aware of, introduced, informed of, on speaking terms with, cognizant of, attuned to, no stranger to; see also knowledgeable.
Antonyms unacquainted, unaware*, ignorant.
"familiar with." YourDictionary, n.d. Web. 11 June 2018. <http://thesaurus.yourdictionary.com/familiar-with>.
familiar with. (n.d.). Retrieved June 11th, 2018, from http://thesaurus.yourdictionary.com/familiar-with