up on
adj1
Colloquial, Idiomatic, Usually Well-informed concerning.
- The tour guide was certainly up on his history.
- Maybe you aren't up on current events, but we just got our asses kicked, pal1986, Aliens:
2 more examples
- Says Sigismondi: "I don't watch [MTV]. I'm really not up on what's trendy."2001 June 24, Christopher John Farley, “The New Video Wizards”, in Time:
- “She was up on everything,” said the biographer A. Scott Berg. “Not just the news but every play or film or book.”2011 August 25, William Grimes, “Casey Ribicoff, Senator’s Widow and a Style Leader, Dies at 88”, in New York Times, retrieved 03 Jan 2012: