ōˈfā adjective
Etymology: French, literally, to the point
1. : fully competent : up to the mark : capable
he is remarkably au fait in business
quite au fait at playing tennis
2. : familiar : fully informed : in touch : au courant
they are always au fait on the latest events
putting her au fait with what had happened
3. : socially correct : proper : in good form
a somewhat unusual piece of interior decoration, but really quite au fait