General synonyms:
* Articulate: Able to express oneself clearly and effectively.
* Fluent: Speaking or writing smoothly and easily.
* Persuasive: Able to convince or influence others.
* Powerful: Having a strong impact or effect.
* Moving: Eliciting emotion or feeling.
* Poignant: Evoking a keen sense of sadness or regret.
* Impressive: Making a strong or favorable impression.
More specific synonyms:
* Silver-tongued: Skilled in speaking or writing.
* Gifted: Having a natural talent for expression.
* Articulate: Able to express oneself clearly and effectively.
* Well-spoken: Speaking in a clear, correct, and pleasant way.
* Expressive: Able to convey emotions and ideas effectively.
* Luminous: Shining brightly with intellect and insight.
* Forceful: Having a strong and compelling presence.
The best synonym for you will depend on the specific context and what you want to emphasize.