Crossword Genius

Overbearingly assertive (5)

Ross

I believe the answer is:

brash

(Other definitions for brash that I've seen before include "Very loud, flashy or showy" , "Flashy, crude" , "Impertinent" , "Offensively bold" , "Loud and rude" .)

I've seen this clue in the Sydney Morning Herald.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.