do (one's) homework

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do (one's) homework

1. Literally, to complete the school work that has been assigned by a teacher to be done at home. You can't watch any more television until you do your homework!
2. To be thoroughly prepared and informed about something or something, especially in advance of some process, action, or decision. Be sure you do your homework before heading into that meeting; there's a lot at stake, and no one's going to like it if you aren't up to speed. I always do my homework before I make big purchases.
See also: homework
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

do your homework

If you do your homework, you prepare for something, especially by finding out information about it. Before you buy any shares, do your homework. Doing your homework before you make your request will help you to have a confident manner.
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Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

do your homework

examine thoroughly the details and background of a subject or topic, especially before giving your own views on it.
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Farlex Partner Idioms Dictionary © Farlex 2017

do your ˈhomework (on something)

find out the facts, details, etc. of a subject in preparation for a meeting, a speech, an article, etc: He had just not done his homework for the interview. He couldn’t answer our questions.
See also: homework
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
But I suspect she is looking to try to put some unfounded blame on the previous administration for not being able to deliver her election promise in relation to council tax , because she didn't do her homework before making those promises.
The girl rushed out of class and jumped into the playground, scared of how her teacher would react to her failure to do her homework. The girl, whose age was not given, was taken to hospital in Kafr El-Sheikh province, north of Cairo.