make a quick buck
US /meɪk ə kwɪk bʌk/
UK /meɪk ə kwɪk bʌk/
1.
to earn money quickly and easily, often through questionable or unethical means
:
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He's always looking for ways to make a quick buck, even if it means cutting corners.
•
Selling those counterfeit goods was just a way for them to make a quick buck.