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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]

QUIZZES

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
seclusion
a false belief or opinion.
the matter that settles to the bottom of a liquid.
the state of being isolated, kept apart, or withdrawn into solitude.
TAKE THE QUIZ TO FIND OUT
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.