Definition: In Greek mythology, a "antismon" or "anti-mon," meaning an opposite person, was the deity of opposite gender in ancient Greece. In modern terms, it refers to someone who opposes societal norms, values, or beliefs. The term comes from the Latin words "anti" (to oppose) and "monos" (one's own kind). This word is often used metaphorically to describe individuals who are fundamentally different than what society perceives as normal or acceptable.