Synonyms of inquiry

1. inquiry, enquiry, research, problem solving: usage: a search for knowledge; "their pottery deserves more research than it has received"
2. question, inquiry, enquiry, query, interrogation, questioning, inquiring: usage: an instance of questioning; "there was a question about my training"; "we made inquiries of all those who were present"
3. inquiry, enquiry, investigation, investigating: usage: a systematic investigation of a matter of public interest