verb (v)

• turn into curds(verb.change)

  Example:
  Curdled milk.
  

  Synonym:
  clabber, clot
  Antonym:
  homogenise, homogenize
  

  source: wordnet30
• go bad or sour(verb.change)

  Example:
  The milk curdled.
  

  source: wordnet30
• turn from a liquid to a solid mass(verb.change)

  Example:
  His blood curdled.
  

  source: wordnet30
• To change into curd; to coagulate; as, rennet causes milk to curdle.(verb)

  source: webster1913
• To change into curd; to cause to coagulate.(verb)

  source: webster1913