1. to form into curds or lumps, especially when milk or other liquid separates or spoils
2. to cause something to form curds or become thick and lumpy
3. to fill with horror or fear
Usage: figurative

Examples

• The milk will curdle if you add lemon juice to it.
• Heat can curdle the cream in your coffee.
• The yogurt had curdled and smelled sour.
• Don’t let the sauce get too hot or it will curdle.
• The blood-curdling scream made everyone freeze.
• Her cruel words made my blood curdle.
• The cheese is made by letting the milk curdle naturally.