misguided

/ˌmɪsˈɡaɪ.dɪd/

形容词

被误导的；被引入歧途的；判断失误的
He was shot as he made a misguided attempt to stop the robbers single-handed.
他不理智地想一个人制止劫匪抢劫，结果遭到枪击。