Catheretic is an uncommon word. It is a medical term used to describe a substance that helps to induce vomiting. The word is rarely used in everyday language and is mostly found in medical contexts. There are a few synonyms for catheretic, such as emetic, vomit-inducing, nauseating, or puking. These words all describe something that causes a person to vomit. While they are not interchangeable, they convey the same general meaning as catheretic. Using a synonym, such as emetic, can help to simplify the language when discussing vomiting-inducing substances or medications.