throw good money after bad

Waste more money in hopes of recouping previous losses, as in Hiring him to improve that software is throwing good money after bad; it's based on an older operating system and will soon be obsolete. [Late 1800s]

Words nearby throw good money after bad

throw cold water on, throw down, throw down the gauntlet, throw dust in someone's eyes, throw for a loop, throw good money after bad, throw in, throw in one's hand, throw in one's lot with, throw in someone's face, throw in the sponge