"Idiosyncratic" refers to unique or peculiar characteristics or behaviors that are specific to an individual or a group. These traits can manifest in various ways, such as unusual habits, preferences, or thought processes. For example, an artist might have an idiosyncratic style that sets their work apart from others, making it instantly recognizable. In psychology, idiosyncratic traits can influence how a person interacts with the world. Understanding these traits can help in fields like psychotherapy or education, where recognizing individual differences is crucial for effective communication and support.