1. the quality or state of being crusty; having a hard outer layer or surface
2. the quality of being bad-tempered, grumpy, or irritable
Usage: informal

Examples

• The crustiness of the bread made it perfect for dipping in soup.
• His crustiness in the morning improved after he had his coffee.
• The old sailor's crustiness masked a kind heart.
• The crustiness of the pie crust came from using cold butter.
• She complained about the crustiness of his manner toward new employees.
• The crustiness around the wound needed to be cleaned gently.