noun
1.
the act or an instance of seeking truth, information, or knowledge about something
an exhaustive inquiry revealed no evidence of a conspiracy
Synonyms: delving, inquest, inquisition, investigation, probe, probing, quest, research
Related Word: catechizing, interrogation, questioning; audit, check, examination, inspection, scrutiny; hearing; inquirendo
2.
a request for information
addressed his inquiry to the personnel director
Synonyms: interrogation, interrogatory, query, question, questioning