Crisp (adjective)

1. Firm and brittle, as in the texture of certain foods.
2. Pleasantly firm and fresh, as in the texture of certain fruits and vegetables.
3. Brisk and lively, as in the weather or a sound.

Origin:

From middle english crispe, from old english crisp ("curled, curled up, crisp"), from proto-germanic *kruspaz ("curled, curled up"), from proto-indo-european *gers- ("to cur.l")

Examples:

1. The apples were crisp and juicy.
2. The leaves crunched underfoot, crisp from the frost.
3. The air was crisp and invigorating.
4. The bacon was crispy and delicious.
5. The sound of the guitar was crisp and clear.