brashest

/B R AE1 SH AH0 S T/
adjective
  1. 1

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

    โ€œa brash young businessman; a brash tabloid; a brash sense of humourโ€

  2. 2

    (of actions) Overly bold, impetuous or rash.

  3. 3

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

    โ€œbrash colours; a brash perfumeโ€

adjective
  1. 1

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

Source: https://en.wiktionary.org/wiki/brash, https://en.wiktionary.org/wiki/brashest