brash

1. A rash or eruption; a sudden or transient fit of sickness.
2. A sudden burst of rain.
3. An attack or assault.

verb

To disturb.

1. (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

2. (of actions) Overly bold, impetuous or rash.
3. (of things) Bold, bright or showy, often in a tasteless way.

   brash colours; a brash perfume

1. Leaf litter of small leaves and little twigs as found under a hedge.
2. Broken and angular rock fragments underlying alluvial deposits.
3. Broken fragments of ice.

adjective

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