When it comes to finding synonyms for the word "extragranular", choices may be limited. However, there are a few alternatives worth considering. One possible synonym is "non-granular", which conveys the idea of something existing outside or beyond granules. Another option could be "superficial" or "external", indicating a surface-level or outer presence. Additionally, "apart from granules" or "granule-free" could be used to describe something that is free from or lacking granules. While the selection may be small, these synonym options effectively capture the concept of being outside or separated from granules.