One who inquires or makes an inquisition, especially a questioner who is excessively rigorous or harsh.
One, especially a detective, who investigates.
One who inquires
Find another word for querier. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for querier, like: inquirer, inquisitor, investigator, prober, quester, questioner, researcher, ask, investigate, enquirer and asker.