The antonyms for "most undercooked" are "well-done," "thoroughly cooked," "fully cooked," "overcooked," "burnt," "charred," "crispy," and "done to perfection." These antonyms describe the opposite of "most undercooked," which suggests that something is not cooked enough and may be unpleasant or unsafe to eat. When cooking, it is important to ensure that meats, vegetables, and other foods are cooked to the appropriate temperature to prevent harmful bacteria from thriving. While some may prefer their meats or vegetables cooked to a certain level of doneness or crispiness, it is essential to strike the right balance to ensure that your food is healthy and safe to eat.