Gossamery is a word that describes something delicate and light, like spiderwebs or thin fabric. The antonyms for gossamery would be words that describe something heavy, strong, and robust. These antonyms could be things like thick, durable, solid, or rough. They could also be words like sturdy, robust, substantial, or resilient. When used in contrast with gossamery, these words help to create a vivid image of two things that are complete opposites. By using antonyms for gossamery, you can create a sense of contrast and balance in your writing.