1. Cake: While both are baked goods, cakes are often larger, more elaborate, and sweeter than biscuits.
2. Bread: A more general term for baked goods, but it usually refers to a loaf rather than individual pieces.
3. Crackers: These are typically thinner, crispier, and less sweet than biscuits.
4. Fruit: A completely different food category, but could be considered an antonym in the sense of being a healthy alternative.
5. Meat: A broader category, but could be considered an antonym if thinking of biscuits as a side dish and meat as a main course.
It's important to note that these are all "contextual" antonyms, meaning they depend on the specific situation and what aspect of "biscuit" you're trying to contrast.