panellist
/ˈpænəlɪst/
noun
- A person who is a member of a panel, especially one who takes part in a discussion, game show, or judging committee.
- She was chosen as a panellist for the science fair because of her expertise in biology.
- The TV show had three panellists who answered questions from the audience.
- Each panellist gave a short speech before the debate began.
Synonyms