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au fait

American  
[oh fe] / oʊ ˈfɛ /

adjective

French.
  1. having experience or practical knowledge of a thing; expert; versed.


au fait British  
/ o fɛ, əʊ ˈfeɪ /

adjective

  1. fully informed; in touch or expert

"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

Etymology

Origin of au fait

Literally, “to the fact”

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Variety described it as "dutiful fan service, sure to satisfy legions of cultists cosplaying in tweed, but not unapproachable to viewers who aren't entirely au fait with the show".

From BBC • Mar. 5, 2026

However, Nelson is less au fait with Asian finance and politics than his predecessor, Mark Tucker, a veteran of Hong Kong’s insurance industry.

From The Wall Street Journal • Dec. 4, 2025

But perhaps the McLaren driver was not completely au fait with Max Verstappen’s day.

From BBC • Mar. 22, 2024

He then does his homework, immersing himself in music from the relevant genre and era until he’s au fait with the songwriting tropes.

From The Guardian • Mar. 31, 2016

He lived at Breslau as king, and he kept spies at the court of his Sovereign, who were to keep him au fait of the state of things.

From Pictures of German Life in the XVIIIth and XIXth Centuries, Vol. II. by Freytag, Gustav

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