im ‧ pet ‧ u ‧ ous /ɪmˈpetʃuəs/ BrE AmE adjective
[ Date: 1300-1400 ; Language: French ; Origin: impétueux , from Late Latin impetuosus , from Latin impetus ; ⇨ ↑ impetus ]
tending to do things very quickly, without thinking carefully first, or showing this quality SYN impulsive :
He was high-spirited and impetuous.
She might live to regret this impetuous decision.
—impetuously adverb
—impetuousness noun [uncountable]
—impetuosity /ɪmˌpetʃuˈɒsəti, ɪmˌpetʃuˈɒsɪti $ -ˈɑː-/ noun [uncountable]