| verb | investigate scientifically “Let's investigate the syntax of Chinese” |
| verb | conduct an inquiry or investigation of “The district attorney's office investigated reports of possible irregularities” |
| investigation | noun | the work of inquiring into something thoroughly and systematically |
| investigator | noun | a scientist who devotes himself to doing research |
| investigating | noun | the work of inquiring into something thoroughly and systematically |
| investigative | adjective | designed to find information or ascertain facts |
| investigatory | adjective | designed to find information or ascertain facts |
| inquisitive | adjective | inquiring or appearing to inquire |
| inquiry | noun | a systematic investigation of a matter of public interest |
| inquiring | noun | a request for information |
| enquirer | noun | someone who asks a question |
| enquiry | noun | a systematic investigation of a matter of public interest |