1. having separated into thick lumps or clots, especially of milk or cream that has gone sour

1. past tense and past participle of curdle: to form into thick lumps or clots

Examples

• The milk had curdled and was no longer safe to drink.
• She poured the curdled cream down the drain.
• The sauce curdled when I added the lemon juice too quickly.
• His blood curdled at the terrifying sound.
• The heat curdled the eggs in the soup.
• The curdled mixture looked unappetizing.
• Fear curdled in her stomach as she heard footsteps.