Quaoar is not a word that has many synonyms as it is actually the name of a dwarf planet located in the Kuiper Belt, a region of the Solar System beyond Neptune. However, some possible alternative words that might be used to describe Quaoar could include distant, isolated, or far-flung, as the dwarf planet is located at an extreme distance from Earth. Additionally, other terms in astronomy that might be associated with Quaoar include Kuiper Belt Object, trans-Neptunian object, or minor planet, as these are all categories of celestial bodies that share some similarities with Quaoar.