1. Being up to particular standard or level especially in being up to date in knowledge
   "always au fait on the latest events"
   - abreast, au courant, up on, apace [N. Amer]

See also: informed

Encyclopedia: Au fait

• achenial
• Acheron
• Acheronian
• Acherontia
• Acherontia atropos
• Acherontic
• Acheson
• Acheson process
• Acheta
• Acheta assimilis
• Acheta domestica
• achievability
• achievable
• achieve
• achievement
• achiever
• Achille Ratti
• achillea
• Achillea millefolium
• Achillea ptarmica
• Achilles
• Achilles tendon
• Achilles' heel
• achimenes
• aching