curdling

(noun) the process of forming semisolid lumps in a liquid. Synonyms: clotting, coagulation.

(verb) turn into curds. Synonyms: curdle, clabber, clot. Example: "Curdled milk."

(verb) go bad or sour. Synonyms: curdle. Example: "The milk curdled."

(verb) turn from a liquid to a solid mass. Synonyms: curdle. Example: "His blood curdled."