investigator
US /ɪnˈves.tə.ɡeɪ.t̬ɚ/
UK /ɪnˈves.tə.ɡeɪ.t̬ɚ/
1.
a person who carries out a formal inquiry or investigation to discover and examine the facts of an incident, allegation, etc., in order to establish the truth
:
•
The police investigator gathered evidence at the crime scene.
•
She works as a private investigator, specializing in missing persons cases.