Answer: brassiest

AnswerCrossword Clue
BRASSIESTHaving the most nerve
brassiestResembling brass, in particular
brassiestBRASSY, resembling brass
brassiestSounding like a brass musical instrument; harsh and loud
brassiest(of a person, typically a woman) Tastelessly showy or loud in appearance or manner
brassiestBright or harsh yellow