a run for your money
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run for (one's) money
1. A prolonged period of success. The slot machine gave me a run for my money, but, in the end, the casino was the only real winner.
2. A challenge. Sure, Sheila still became valedictorian, but Tim really gave her a run for her money!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
a (good) run for your ˈmoney(informal)
1 a lot of satisfaction or pleasure from something; good value for something: I’ve had a good run for my money as director of this company, but now I think it’s time someone younger took over.
2 strong and satisfying competition, opposition, etc: They may not beat your team but they’ll certainly give you a good run for your money.
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