well-acquainted with
Definitions
Having a thorough or detailed knowledge of a subject or person.
Being very familiar or closely associated with someone or something.
Examples
She is well-acquainted with the local customs after living in the village for over a decade.
The detective was well-acquainted with the suspect's history of petty theft.
Synonyms
familiar with conversant with versed in intimately knowledgeable about well-versed in abreast of
Antonyms
unfamiliar with ignorant of unacquainted with stranger to oblivious to unversed in