/ɪmˈpʌlsɪv/ acting suddenly without thinking carefully about what might happen because of what you are doing 凭冲动行事的；易冲动的 SYN impetuous, rash an impulsive decision/gesture 冲动的决定／姿态 You’re so impulsive! 你太冲动了！ He has an impulsive nature. 他生性冲动。 impulse