misguided
adjective uk/ˌmɪsˈɡaɪ.dɪd/ us/ˌmɪsˈɡaɪ.dɪd/
被误导的；被引入歧途的；判断失误的
unreasonable or unsuitable because of being based on bad judgment or on wrong information or beliefs
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。
The company blamed its disappointing performance on a misguided business plan. 这家公司将其令人失望的表现归咎于错误的商业计划。
Synonym: ill-conceived