Uncomplimentary remarks refer to negative comments or criticisms that are made about someone or something. There are various synonyms that can be used to describe such remarks, including disparaging comments, critical remarks, derogatory statements, and insulting language. Other phrases that can be used to convey the same meaning include abusive language, offensive remarks, and pejorative comments. These synonyms are often used interchangeably, but they all describe comments that are intended to belittle or demean someone or something. It is important to avoid using uncomplimentary remarks in communication, as they can cause hurt feelings and damage relationships.