An orator; specifically, an artificial orator without genuine eloquence; a declaimer
A rhetorician is a person who is good at public speaking or who is trained in the art of rhetoric. an able and fiercely contentious rhetorician. someone who is trained or skilful in the art of persuading or influencing people through speech or writing orator
{i} teacher of rhetoric; orator, expert in the art of eloquent speech; one who uses eloquent or bombastic language (esp. when he has nothing important to say)