The power of clouds to obnubilate, both figuratively and literally, is a popular concept in music, especially from folk singer Joni Mitchell. In “Both Sides Now,” she croons, “I’ve looked at clouds from both sides now / From up and down and still somehow / It’s cloud’s illusions I recall / I really don’t know clouds at all.” This word comes directly from the Latin “obnubilat,” which means “covered with clouds or fog.”