up on something, be
Be well informed or up-to-date about something, as in I'm not up on the latest models of cars. [Colloquial]
THIS PSAT VOCABULARY QUIZ IS PERFECT PRACTICE FOR THE REAL TEST
In our third teacher-created PSAT practice test there are new and unique vocabulary terms you may have never heard of! Can you guess what they mean?
Question 1 of 10
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.