The antonyms for the word "pre-ferments" would be "post-ferments" or "non-fermented". While pre-ferments refer to a method of preparing dough before the actual fermentation process, post-ferments refer to dough that has already undergone fermentation. Non-fermented dough, on the other hand, has not undergone any fermentation process at all. Pre-ferments are typically used in bread-making to enhance flavor and texture, while post-fermented dough is typically easier to work with and results in a smoother, more consistent product. Non-fermented dough, while less flavorful than pre- or post-fermented dough, is still useful for certain types of baked goods, such as crackers or biscuits.