Flaky (adjective)

1. Having a tendency to flake or peel off in small thin pieces.
2. Inconsistent or unreliable in behavior or performance.
3. Tending to flake off, as paint or skin.

Origin:

Derived from the verb "flake".

Examples:

1. The paint on the walls was flaky and in need of a new coat.
2. The pastry was flaky and had a buttery texture.
3. He was always flaky and would often cancel plans at the last minute.
4. The flaking skin on her face was a symptom of the skin condition.
5. The flaking paint on the metal surface was a sign of rust.