up on
Adjective

up on (not comparable)

  1. (idiomatic, colloquial) Well-informed concerning.
    The tour guide was certainly up on his history.
    • 2001 June 24, Christopher John Farley, "[http://www.time.com/time/magazine/article/0,9171,138232,00.html The New Video Wizards]," Time:
      Says Sigismondi: "I don't watch [MTV]. I'm really not up on what's trendy."
    • 2011 Aug. 25, William Grimes, "Casey Ribicoff, Senator’s Widow and a Style Leader, Dies at 88 ↗," New York Times (retrieved 3 Jan 2012):
      “She was up on everything,” said the biographer A. Scott Berg. “Not just the news but every play or film or book.”



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