a seeking or request for truth, information, or knowledge.

an investigation, as into an incident

a Congressional inquiry into the bribery charges.

the act of inquiring or of seeking information by questioning; interrogation.

a question; query.

noun

answer , reply

noun

analysis , audit , catechizing , check , cross-examination , delving , disquisition , examination , exploration , fishing expedition , grilling , hearing , inquest , inquisition , inspection , interrogation , interrogatory , investigation , legwork , poll , probe , probing , pursuit , q and a , query , quest , question , questioning , quizzing , request , research , scrutiny , search , study , survey , third degree , trial balloon *notes:a query is a single question; an inquiry (or enquiry) may be a single question or extensive investigation (series of questions) , interview , investigationmscrutiny , reconnaissance