General synonyms:
* Magnetic
* Alluring
* Captivating
* Engaging
* Compelling
* Charming
* Attractive
* Appealing
* Radiant
* Inspiring
Synonyms emphasizing personality:
* Dynamic
* Energetic
* Enthusiastic
* Passionate
* Exuberant
* Vivacious
* Effervescent
* Magnetic
* Spellbinding
* Mesmerizing
Synonyms emphasizing leadership qualities:
* Influential
* Powerful
* Authoritative
* Commanding
* Visionary
* Inspiring
* Motivational
Synonyms emphasizing social skills:
* Likeable
* Popular
* Sociable
* Outgoing
* Friendly
* Approachable
Synonyms emphasizing impact:
* Powerful
* Influential
* Impactful
* Moving
* Stirring
* Memorable
More specific synonyms:
* Articulate: able to express oneself clearly and effectively.
* Witty: using humor in a clever and amusing way.
* Eloquence: fluent and persuasive speaking or writing.
* Radiance: a quality of shining brightly, especially with happiness.
* Presence: a strong sense of being or being noticed.
The best synonym for "charismatic" will depend on the specific context and the qualities you want to emphasize.