au fait
[adjective]
Synonyms: able, capable, competent, good, proper, qualified, wicked, familiar, abreast, acquainted, au courant, conversant, informed, up, versant, versed, decorous, becoming, befitting, comme il faut, conforming, correct, decent, nice, right

[TahlilGaran] English Synonym Dictionary ▲

au fait /əʊ ˈfeɪ $ oʊ-/ adjective
be au fait with something to be familiar with a system or way of doing something:
I’m not really au fait with the computer system yet.

[TahlilGaran] Dictionary of Contemporary English ▲