# crusty

/ˈkɹəsti/ (US) · /kɹˈʌsti/ (UK) · CEFR B2 · Adjective

Source: https://englishreference.com/word/crusty
Updated: 2026-05-11

## Definition

having a hard outer layer or being old and dry. In a casual way, it can also describe someone who is grumpy or something that is dirty and worn out.

For teachers: having or forming a hard outer layer or coating. By extension, describes a person who is irritable and old-fashioned, or an object that is unpleasantly dirty and stiff.

## Examples

- The fresh bread has a delicious crusty top.
- He washed his crusty old boots after spending the entire afternoon working in the muddy garden.
- The professor was known for his crusty exterior and sharp tongue, though students eventually realized his grumpiness masked a genuine dedication to their academic success.

## Usage notes

- Often used both literally for food and figuratively for personality traits or cleanliness.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.