1. (noun)research worker, researcher, investigator a scientist who devotes himself to doing research Synonyms: tec, investigator, researcher, research worker, police detective, detective
2. (noun)investigator someone who investigates Synonyms: tec, researcher, research worker, police detective, detective
3. (noun)detective, investigator, tec, police detective a police officer who investigates crimes Synonyms: researcher, investigator, tec, research worker, police detective, detective