Investigatory means the same as investigative .
At no time did I make an attempt to impede any ~ effort.
ADJ: ADJ n
Investigatory means the same as investigative .
At no time did I make an attempt to impede any ~ effort.
ADJ: ADJ n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012