question, 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, query, quest, question, questioning,
quizzing, request, research, scrutiny, search, study, survey, third
degree, trial balloon