be up on (something)

(redirected from am up on)

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

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

be up on

be well informed about a matter or subject.
See also: on, up