The phrase "most emetic" refers to something that is extremely nauseating and causes vomiting. Some synonyms for this term include "extremely nauseating," "vomit-inducing," "disgusting," "revolting," "sickening," and "nauseous." Other words that can be used to describe something that is most emetic are "repulsive," "offensive," "abhorrent," "stomach-churning," "nausea-provoking," and "repugnant." When trying to convey the idea of something that is most emetic, it is important to use words that paint a vivid picture and leave no doubt in the reader's mind about the unpleasantness of the object or experience in question.