impulsive
US
UK impulsive adj: (person: acts on impulse) (人)
SC 冲动的，易感情冲动的 chōng dòng de，yì gǎn qíng chōng dòng de
My brother is impulsive; he always acts without thinking.
impulsive adj: (act: spontaneous, rash) (行为)
SC 冲动的，凭冲动的 chōng dòng de，píng chōng dòng de
Peggy's impulsive action cost her severely.