adversarial
adjective
uk/ˌædvəˈseəriəl/ usan adversarial activity, process, etc. involves arguments or disagreements between two or more people or organizations:
The culture of litigation which is so prevalent means we are living in a much more adversarial environment nowadays.
It is hoped that recent changes to the law will minimize the sometimes adversarial nature of management-labor relations.
LAW
relating to a legal process in which lawyers present facts for and against someone who is accused of a crime:
an adversarial system/process
Compare
inquisitorial