brasher

(of people or behaviour) Overly bold or self-assertive to the point of being insensitive, tactless or impudent; shameless.

“a brash young businessman; a brash tabloid; a brash sense of humour”

(of actions) Overly bold, impetuous or rash.

(of things) Bold, bright or showy, often in a tasteless way.

“brash colours; a brash perfume”

Brittle (said e.g. of wood or vegetables).