"Adversarial" refers to a situation or relationship characterized by opposition or conflict. It often describes interactions where two parties have opposing interests or goals, leading to competition or confrontation. This term is commonly used in legal contexts, where an adversarial system pits opposing sides against each other in court to seek justice. In the realm of technology, particularly in machine learning, "adversarial" can describe techniques used to challenge and improve models. For instance, adversarial attacks involve manipulating input data to deceive algorithms, prompting researchers to enhance the robustness of their systems against such threats.