Fibrillous is an adjective that refers to something that has thin, threadlike fibers or is composed of fibers. Synonyms for fibrillous include fibrous, stringy, wiry, filamentous, hairy, shaggy, fluffy, fuzzy, feathery, and downy. These terms can be used to describe a wide range of materials, including textiles, plant fibers, animal hair, and even certain types of foods. Fibrillous textures are often associated with a delicate or fragile quality, and may be appreciated for their unique appearance or tactile qualities. Using different synonyms for fibrillous can help to add variety and depth to descriptions of these types of materials and textures.