Questioner (noun)

A person who asks questions, especially in an interview or interrogation.

Origin:

Mid 16th century: from latin questionarius, from questionari 'to ask questions'.

Examples:

1. The questioner asked the candidate about his previous experience in the field.
2. The questioner was known for his sharp, incisive questions that often caught people off guard.
3. The questioner's line of inquiry was focused on the witness's involvement in the crime.
4. The questioner was a seasoned journalist, who had interviewed many influential people in his career.
5. The questioner asked the expert to explain his findings in layman's terms, so that everyone in the audience could understand.