Octastyle is an architectural term that refers to a building or structure having eight columns. However, there are several other words that can be used instead of octastyle to describe a structure with eight columns. For instance, you could use the word octapod, which also means eight-footed. Other synonyms include octacolumnar, octastylar, and octalithic. These words are commonly used in describing different styles of architecture where eight columns are featured. Whatever the case, it's important to choose the right word and use it correctly to convey the intended meaning. Overall, synonyms for octastyle allow for varied descriptions of structures that feature eight columns.