curdle

1. (ambitransitive) To form curds so that it no longer flows smoothly; to cause to form such curds. (usually said of milk)Examples: "Too much lemon will curdle the milk in your tea."Synonyms: curdambitransitive

2. (ambitransitive) To clot or coagulate; to cause to congeal, such as through cold. (metaphorically of blood)Examples: ""Vich Ian Vohr," it said, in a voice that made my very blood curdle, "beware of to-morrow!""; "Trust in the science did not curdle at the same instance as trust in the tech conglomerates, but they are not so dissimilar when weighed against the hype of progress."ambitransitive

3. (transitive) To cause a liquid to spoil and form clumps so that it no longer flows smoothly.Examples: "It is enough,' said the agitated Mr. Slurk, pacing to and fro, 'to curdle the ink in one's pen, and induce one to abandon their cause for ever.'"transitive