impertinent; impudent; tactless

a brash young man.

hasty; rash; impetuous.

energetic or highly spirited, esp. in an irreverent way; zesty

a brash new musical.

(used esp. of wood) brittle.

a pile or stack of loose fragments or debris, as of rocks or hedge clippings.

brash ice.

Pathology . heartburn ( def. 1 ) .

Scot. and North England Dialect .

a sudden shower or burst of rain.

any sudden, minor sickness or indisposition, esp. of the digestive tract.

an assault; attack.

noun

foolhardiness , incautiousness , rashness , recklessness , temerariousness , assumption , audaciousness , audacity , boldness , brazenness , cheek , cheekiness , chutzpah , discourtesy , disrespect , effrontery , face , familiarity , forwardness , gall , impertinence , impudency , incivility , insolence , nerve , nerviness , overconfidence , pertness , presumptuousness , pushiness , rudeness , sassiness , sauciness