familiar_with
1. [ adjective ] having fair knowledge of
Synonyms: acquainted_with acquainted
Examples:

"they were acquainted" "fully acquainted with the facts"

Related terms: familiar
Similar spelling:   familiar_spirit
  familiarity
  familiarly
  familiarize
  familiarise
  familiarized
  familiarised
  familiarizing
  familiarising
  familiarization
  familiarisation