Usage Note
Impulsivo describes a person or action driven by impulse rather than reflection. It follows standard agreement: impulsiva (f), impulsivos (m pl). The related noun is impulsividad and the abstract impulso ('impulse/urge'). In informal speech, actuar por impulso ('to act on impulse') covers the same territory as the adjective applied to a person.
Examples
"Es una persona muy impulsiva."
Natural Translation
She is a very impulsive person.

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