See rashness in Webster's New World Roget's A-Z Thesaurus II
noun
Careless headlong action:
haste, hastiness, hurriedness, precipitance, precipitancy, precipitateness, precipitation, rush. See carefulFoolhardy boldness or disregard of danger:
brashness, foolhardiness, incautiousness, recklessness, temerariousness, temerity. See careful
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