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v. cur·dled, cur·dling, cur·dles
a. To change into curd.
b. To become congealed or lumpy: The sauce curdled in the pan.
2. To become spoiled or transformed into something bad: Warm feelings curdled into distrust.
1. To cause to curdle, congeal, or become lumpy: "The inlet was curdled with slush" (Alyson Carol Hagy).
2. To cause to be spoiled or transformed into something bad: "an event that curdled whatever goodwill the prince had awakened" (Julia Whitty).
[Frequentative of curd.]