questioner

noun
UK /ˈkwestʃənə/
US /ˈkwestʃənər/

A questioner is a person who asks questions.

The questioner raised her hand to ask the teacher about the homework.


OTHER MEANINGS

2. A person who formally challenges or doubts something, such as a rule or belief.

The questioner of the old policy spoke at the meeting.

3. A member of an audience or panel who poses questions to a speaker.

After the talk, the questioner stood up to ask about the results.

4. Someone who expresses doubt about a claim or statement.

He was a gentle questioner of the official story.