In the know about
Else clues • Aware of
• Aware of, in slang
• Aware of, informally
• Aware of, once
• Aware of, slangily
• Clued in
• In on
• In on, like a cool cat
• Informed about
• Not in the dark about
• Up on, as the jive
• Wise about
• Wise about, to a cool cat