Formal:
* Orator: This is the most traditional term, often used for someone who delivers formal speeches, especially in ancient times.
* Rhetorician: This term emphasizes the use of rhetorical techniques and the art of persuasion in speech.
* Eloquent Speaker: This highlights the speaker's ability to express themselves clearly, powerfully, and beautifully.
* Compelling Speaker: This describes someone who holds the audience's attention and interest through their speech.
Informal:
* Motivational Speaker: This term is often used for speakers who aim to inspire and encourage their audience.
* Inspiring Speaker: This emphasizes the speaker's ability to ignite passion and enthusiasm in their listeners.
* Charismatic Speaker: This term highlights the speaker's personality and ability to connect with the audience on an emotional level.
* Powerful Speaker: This simply emphasizes the impact and forcefulness of the speaker's message.
The best term to use will depend on the specific context and the speaker's style.