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.
See also: homework
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.
See also: homework
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 anyone who had done their homework would know that this team have beaten Pakistan twice in the last year.
In their negotiation scenarios, the professors concluded the person making a precise offer is successfully giving the illusion they have done their homework. When perceived as better informed, the person on the opposite end believes there is less room to negotiate.
It seemed clear that the Kelleways had done their homework and discovered that the far side was the place to be in the testing conditions.
These MPs have definitely not done their homework. Apart from loss of revenue from the local expats, Saudis, Qataris and Kuwaitis that put money in the government coffers, what is going to happen to all the hotels?
ORGANISERS of Blues' annual F&C Investments golf event at the Forest of Arden last week should have done their homework on the nicknames of football clubs.
Had they done their homework they would have found the plane was one flown by Polish pilots during the Battle of Britain, in fact 303 Squadron - the astonishingly brave regiment of Polish fighter pilots who were rescued from France and battled the Nazis over the skies of England.
DONE THEIR HOMEWORK: John Gregory, right, and Karl Ward, of Homes Direct 365 Picture by DOUG MOODY
WARREN GATLAND yesterday blasted South Africa, saying the world champions "haven't done their homework" on double Grand Slam-winner Stephen Jones.
Some were packed by grizzled old heads, but many by younger cops and armed citizens who had done their homework and learned the lessons of the past.
Most of the visitors to the site have done their homework on the company's website.
They are the best source of information because not only have they done their homework but so have their bankers.
But the ministerial staff members making the approach had done their homework. Saito is no strongman in the political arena, but in the business world, he's no lightweight.
Jimmy and Love Reign O'er Me proved they'd done their homework. The set climaxed with Baba O'Reilly and Won't Get Fooled Again, complete with Roger Daltrey- style scream.
They will have done their homework and will know what to expect.
"While some schools are lowering fat and making healthier vegetarian meals available, not enough have done their homework when it comes to nutrition.