Delish is a slang term used to describe something that is delicious, tasty, or mouth-watering. As a term, delish may not have any true antonyms. The closest phrases that could be considered antonyms of delish are bland, unpleasant, and distasteful. These terms describe foods that are not flavorful, enjoyable, or satisfying. However, they do not necessarily mean that the food is bad or spoiled, just that it does not have a particularly pleasant taste. While delish is a commonly used term in modern language, it is important to remember that there are many words that can refer to the taste of food.