Ants-pants is a British slang term that is used to describe someone or something that is excellent or highly impressive. There are several synonyms for this term, including exceptional, outstanding, superb, fantastic, and marvelous. Other terms that can be used to describe ants-pants include amazing, remarkable, extraordinary, sublime, and phenomenal. These synonyms can be used to express admiration or enthusiasm for something that is considered to be of exceptional quality or value. Whether describing a person, a performance, or an experience, these words can help to convey a sense of excitement or amazement, and capture the essence of what it means to be ants-pants.