Synonyms of the word

investigator

• n. One who investigates.

detective

• n. (law enforcement) A police officer who looks for evidence as part of solving a crime; an investigator.
• n. A person employed to find information not otherwise available to the public.

expert

• adj. Extraordinarily capable or knowledgeable.
• adj. Characteristic of an expert.
• n. A person with extensive knowledge or ability in a given subject.
• n. (chess) A player ranking just below master.

officer

• n. One who has a position of authority in a hierarchical organization, especially in military, police or…
• n. One who holds a public office.
• n. An agent or servant imparted with the ability, to some degree, to act on initiative.
• n. (colloquial, military) A commissioned officer.
• v. (transitive) To supply with officers.
• v. (transitive) To command like an officer.

policeman

• n. A member of a police force, especially one who is male.
• n. (chemistry) A glass rod capped at one end with rubber, used in a chemistry laboratory for gravimetric…

researcher

• n. One who researches.

scientist

• n. One whose activities make use of the scientific method to answer questions regarding the measurable universe…