To be condescending means to display a patronizing attitude towards others, often implying that one believes they are superior or more knowledgeable. This behavior can manifest through tone, language, or actions that belittle or undermine the other person's abilities or intelligence. In summary, being condescending involves treating others as if they are less capable or informed. It often includes a tone or manner that suggests superiority, which can be perceived as disrespectful or dismissive. This attitude can create barriers in communication and relationships, as it undermines the confidence and dignity of those on the receiving end.