[adj] having the authority to conduct official investigations; "the inquisitorial power of the Senate"
[adj] marked by inquisitive interest; especially suggestive of an ecclesiastical inquisitor; "the press was inquisitorial to the point of antagonism"; "a practical police force with true inquisitorial talents"- Waldo Frank
[adj] especially indicating a form of prosecution in which proceedings are secret and the accused is questioned by a prosecutor who acts also as the judge