General synonyms:
* Prodigy: A person, especially a young one, endowed with exceptional talent or ability.
* Mastermind: A person with exceptional intellectual ability.
* Wizard: A person who is exceptionally skilled or talented in a particular area.
* Savant: A person with a remarkable talent in a specific area, often accompanied by mental disabilities.
* Visionary: A person with a strong imagination and the ability to see things differently.
* Innovator: A person who introduces new ideas or methods.
* Pioneer: A person who is among the first to explore or settle a new area or field.
More formal synonyms:
* Intellectual giant: A person with extraordinary intellectual abilities.
* Creative genius: A person with exceptional creative talents.
* Polymath: A person with a wide range of knowledge and interests.
* Erudite: A person who has a deep and thorough knowledge of a subject.
Informal synonyms:
* Whizz: A person who is exceptionally skilled or talented.
* Bright spark: A person who is intelligent and quick-witted.
* Sharp cookie: A person who is clever and resourceful.
The best synonym for you will depend on the context of your sentence.