14
nervy(adjective, cool, smart, attitude, rude)
14
pert(adjective, cool, smart, attitude, harsh)
13
incautious(adjective, careless, foolish, careful, thoughtless)
12
arrogant(adjective, rude, certain, fresh, bold)
12
foolhardy(adjective, careless, foolish, careful, thoughtless)
12
hasty(adjective, sharp, rough, harsh, rude)
12
imprudent(adjective, careless, foolish, thoughtless, rash)
12
impulsive(adjective, careless, silly, foolish, crazy)
11
headlong(adjective, careless, wild, careful, thoughtless)
10
cocky(adjective, informal, mad, bold, impulsive)
10
daring(adjective, mad, bold, rash, reckless)
10
hotheaded(adjective, careless, wild, silly, foolish)
10
injudicious(adjective, sharp, rough, harsh, rude)
10
tactless(adjective, sharp, ability, rough, offensive)
10
undiplomatic(adjective, sharp, ability, rough, rude)
9
madcap(adjective, careless, wild, crazy, careful)
9
defiant(adjective, mad, bold, naughty, impudent)
9
heedless(adjective, sharp, rude, careless, indifferent)
9
impolitic(adjective, sharp, ability, rough, careless)
9
overconfident(adjective, attitude, courtesy, sure)
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APASmart Define. (2015). brash thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/brash/thesaurus/synonyms
ChicagoSmart Define. 2015. "brash thesaurus" https://smartdefine.org/brash/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, brash thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/brash/thesaurus/synonyms>.
MLASmart Define. "brash thesaurus" 3 August 2015. Web. 22 September 2026. <https://smartdefine.org/brash/thesaurus/synonyms>