- having experience or practical knowledge of a thing; expert; versed.
Origin of au fait
literally, to the fact
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- fully informed; in touch or expert
C18: literally: to the point
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for au fait
1743, French, "to the point, to the matter under discussion," literally "to the fact," from fait "fact" (see feat). Used in French with sense of "acquainted with the facts."
Online Etymology Dictionary, © 2010 Douglas Harper