questioner

Mane (Îngilîzî)

A person who asks questions, or who conducts an official enquiry.

Hevwate

interrogator

inquirer

enquirer

asker

examiner

querier

quizzer

investigator

doubter

inquisitor

interviewer

querist

skeptic

skeptical

correspondent

reporter

prober

requestor

quester

Werger

Fragesteller

questionneur

Frager

ανακριτής

Hörer

Publikum

Zuhörer

Zuhörerschaft

αμφισβητών

εξεταστής

ερωτών

interrogateur

inquisiteur

ondervrager

entrevistador

Etîmolojî (Îngilîzî)

Ji Middle English mîras hatiye girtin: questioner

In summary

From Middle English questioner; equivalent to question + -er.