from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Being familiar with or informed about something.
from the GNU version of the Collaborative International Dictionary of English
- Expert; skillful; well instructed.
from The Century Dictionary and Cyclopedia
- n. Up to the mark; fully skilled or accomplished; expert; possessing or showing the readiness or skill of an adept: followed by at or in: as, he is quite au fait at the game.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. being up to particular standard or level especially in being up to date in knowledge
Borrowing from French au fait (literally "at fact"). (Wiktionary)