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
The American Heritage® Idioms Dictionary
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