Phrase guide

au fait

adj · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /ˌəʊˈfeɪ/
  • UK: Recorded audio is listed in the source snapshot.
  • US: /ˌoʊˈfeɪ/
  • US: Recorded audio is listed in the source snapshot.

1

adj

Meaning 1

Being familiar with or informed about something.

Definition source: English Wiktionary via Wiktextract

Examples

  • Are you au fait with the rules of the game?

Meaning relationships

Synonyms: acquainted, at home, conversant, familiar

Antonyms: none provided

2

adjective satellite

Meaning 2

being up to particular standard or level especially in being up to date in knowledge

Definition source: Princeton WordNet 3.0

Examples

  • kept abreast of the latest developments
  • constant revision keeps the book au courant
  • always au fait on the latest events
  • up on the news

Meaning relationships

Synonyms: abreast(p), au courant, up on(p)

Antonyms: none provided

History

Etymology

Borrowed from French au fait (literally “at the fact”).