"Capilliform" refers to something that is thin and hair-like in appearance. If you want to find synonyms for "more capilliform," you could use words like "filamentous," "fibrous," or "threadlike." These words all convey the same meaning of something that is narrow and elongated, resembling a hair or a thread. Other synonyms include "slender," "delicate," and "fine." When using these words, make sure to provide context so that the reader understands what you are describing. For example, "The roots of the plant were filamentous, stretching deep into the soil to find nutrients".