“使人失去判断力的”可以翻译为 “disorienting” 或 “clouding one's judgment” 。
“disorienting” 侧重于描述某种情况、事物或经历导致人迷失方向、感到困惑，进而影响判断力，例如：The sudden change in plans was disorienting and made it hard for him to think clearly.（计划的突然改变让他感到困惑，难以做出清晰的判断。 ）
“cloud one's judgment” 是一个短语表达，意思是“使某人的判断力受影响、变得模糊” ，例如：Excessive alcohol can cloud one's judgment.（过量饮酒会使人失去判断力。 ）