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

• electric ray
• electric razor
• electric receptacle
• electric refrigerator
• electric resistance
• electric sander
• electric shaver
• electric shock
• electric socket
• electric storm
• electric switch
• electric thermometer
• electric toothbrush
• electric typewriter
• electric-arc furnace
• electric-discharge lamp
• electric-light bulb
• electrical
• electrical cable
• electrical capacity
• electrical circuit
• electrical condenser
• electrical conduction
• electrical contact
• electrical converter