The word "five-sided" is commonly used to describe a shape that has five sides. However, there are many synonyms that can be used to describe this shape. One alternative is "pentagonal," which stems from the Greek word for "five angles." Another synonym is "quintangular," which combines "quint" (meaning "five") and "angular" (meaning "having angles"). Similarly, "quinquangular" is another word that incorporates "quinque" (meaning "five"). Other less common synonyms for "five-sided" include "five-cornered," "pentagonical," and "quinquangularical." No matter which synonym is chosen, it is clear that the shape being described has five sides, allowing for precise communication in both academic and everyday settings.