throw good money after bad

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throw good money after bad (third-person singular simple present throws good money after bad, present participle throwing good money after bad, simple past threw good money after bad, past participle thrown good money after bad)

1. (idiomatic) To waste money in a fruitless attempt to recoup losses previously incurred.

   Coordinate term: cut one's losses

• bad money drives out good
• chase pennies with dollars
• in for a penny, in for a pound
• martingale
• sunk costs fallacy