investigator
noun
[ ɪnˈvɛstɪɡeɪtə ]
• a person who carries out a formal inquiry or investigation.
• "accident investigators are at the crash site"
Similar:
inspector,
examiner,
inquirer,
explorer,
analyst,
analyser,
researcher,
scrutineer,
scrutinizer,
factfinder,
prober,
surveyor,
searcher,
checker,
monitor,
detective,
questioner,
inquisitor,
