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2.
fast or random action
Impetuous people don’t think before they talk and hurt peoples feelings.
by Fernando Bosque July 02, 2008
 
1.
People who act on a sudden idea without considering the results of their actions.
This adjective has a negative connotation.
I used to be impetuous but I've learned to think carefully about decisions and their consequences.
by Vik_Vik January 09, 2011