be up on (something)

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be up on (something)

To have the most current knowledge about a particular subject or issue; to be up to date on (something). Make sure you're up on this account before our meeting tomorrow morning. I'm not too up on the policy changes happening this year—is there a reference guide I can consult?
See also: on, up
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

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]
See also: on, up
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

be up on

be well informed about a matter or subject.
See also: on, up
Farlex Partner Idioms Dictionary © Farlex 2017
See also: