monologist
/məˈnɑlədʒɪst/
noun
- A person who delivers a monologue, especially a performer or someone who talks at length without letting others speak.
- At parties, he was known as a monologist who would talk for hours.
- She trained as a monologist and performed at comedy clubs.
- The monologist held the audience spellbound with his one-man show.
Antonyms