The antonym for brunches would be the absence of a mid-morning meal. Some people may choose to skip breakfast and move straight into lunch, which would be the opposite of brunch. Another antonym for brunches would be dinner. Dinner is the meal typically eaten in the evening, whereas brunches are eaten around mid-morning. Additionally, snacking or grazing throughout the day could also be considered an antonym for brunches. This approach to eating involves consuming small amounts of food frequently, rather than sitting down to a larger, more structured meal like brunch.