The word "skewest" is not actually a recognized English word. However, assuming the intended meaning is related to the word "skew" meaning slanting or tilted, there are several synonyms that can be used instead. These include: askew, crooked, slanted, inclined, angled, oblique, tilted, leaning, sloping, and lopsided. Each of these words can be used to describe something that is not straight or level, but instead has a noticeable tilt or angle. It's important to remember that using synonyms can help vary your writing and make it more interesting to read.