Definition
Well-informed concerning.
In Context
- "The tour guide was certainly up on his history."
- "Maybe you aren't up on current events, but we just got our asses kicked, pal"
- "Says Sigismondi: "I don't watch [MTV]. I'm really not up on what's trendy.""
- "“She was up on everything,” said the biographer A. Scott Berg. “Not just the news but every play or film or book.”"