The phrase "most delish" is a superlative form of the word "delicious," which means highly pleasing or enjoyable to the taste. Antonyms for "most delish" could be "unappetizing," "unpalatable," "disgusting," "nasty," "repulsive," "vile," "nauseating," or "revolting." These words indicate a lack of flavor, appeal, or edibility. While "most delish" implies something that tastes good and is highly enjoyable, its antonyms point to a negative experience of tastes, textures, and smells that one may encounter while eating or drinking. Therefore, it is important to choose your food and drinks wisely to avoid unpleasant gustatory experiences.