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English definition of “investigator”

investigator

noun [C]     /ɪnˈves.tɪ.ɡeɪ.t̬ɚ/ US  /-t̬ɚ/
B2 a person whose job is to examine a crime, problem, statement, etc. in order to discover the truth: Investigators have studied the possible effects of contamination. a private investigatorPeople who analyse and judge
(Definition of investigator noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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