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Related to milksop: Milktoast
1. adjective Extremely weak, timid, or ineffectual. We're going to be the laughingstock of the world after such a milksop response from our government. We can't afford some milksop plan that just keeps the status quo—we need something drastic and daring that might really improve our sales. In the play, the hero returns to drive the milksop suitor from his home and reclaim his rightful place by his wife's side.
2. noun An extremely weak, timid, or ineffectual man. We need a president who's going to lead the nation with strength and resolve, not some milquestoast who'll just kowtow to every foreign leader who raises his voice. I swear, I don't know why I ever married a milksop like you. You can't even defend your own wife when she's been insulted!