The word "blox" does not have any direct synonyms. However, there are several words that can be used to substitute for "blox" depending on the context. For example, "blocks" could be a suitable synonym, especially if the word is meant to denote physical building blocks or puzzle pieces. "Bricks" could also work in such a context. In a digital or online context, "elements" or "components" could be used instead of "blox," while "cubes" might be a good choice if the focus is on the shape or colour of the block. Ultimately, the best synonym for "blox" depends on the context in which it is being used.