give someone/something a run for their money

US /ɡɪv ˈsʌm.wʌn ˈsʌm.θɪŋ ə rʌn fɔr ðɛr ˈmʌn.i/
UK /ɡɪv ˈsʌm.wʌn ˈsʌm.θɪŋ ə rʌn fɔr ðɛr ˈmʌn.i/
"give someone/something a run for their money" picture
1.

만만치 않은 상대가 되다, 경쟁에서 뒤지지 않다

to compete very well against someone or something, making them work hard to win

:
The underdog team really gave the champions a run for their money in the final match.
약체 팀이 결승전에서 챔피언들에게 정말 만만치 않은 상대가 되었다.
Our new product is designed to give the market leader a run for their money.
우리의 신제품은 시장 선두주자에게 만만치 않은 경쟁 상대가 되도록 설계되었다.