muddy² v [T] 1 to make a situation more complicated or more confusing than it was before 使〔情况〕更加复杂; 使〔形势〕更加扑朔迷离: We'll never reach a decision if they keep muddying the issue with religion. 如果他们一直用宗教使事件更加复杂化，我们永远不会达成决议。 2 to make something dirty with mud 使〔某物〕沾上污泥