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To increase one's knowledge (about someone or something) by reading. Usually followed by "on." I never learned much about politics in school, so I've started reading up to have a better understanding of how it all works. Tom's been reading up on the principles of Feng Shui, and he says he wants to start implementing them in the layout of our home. The more I read up on the political candidate, the more I distrusted him.
read up on (someone or something)
To increase one's knowledge of a person or topic by reading about them or it. I better read up on this material before I try to teach it tomorrow. The more I read up on the political candidate, the more I came to distrust him.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
read up (on someone or something)
to find and read some information about someone or something. Please go to the library and read up on George Washington. I don't know anything about that. I guess I need to read up.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
Study or learn by reading, as in I don't know much about childhood illnesses, but I can always read up on them. [First half of 1800s]
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.