Formal:
* Superb: This word implies a high level of quality and excellence, often used for things like performances or artistic works.
* Outstanding: This word suggests something that stands out from the ordinary and is truly exceptional.
* Exceptional: This word emphasizes the rarity and specialness of something.
* Magnificent: This word is used for something impressive and grand, often used to describe things like scenery or buildings.
* Brilliant: This word suggests intelligence, creativity, or skill.
* Remarkable: This word implies that something is noteworthy and deserving of attention.
Informal:
* Awesome: This word is commonly used to express enthusiasm and admiration.
* Fantastic: This word is a more general term for something very good.
* Terrific: This word is another way to express enthusiasm and approval.
* Wonderful: This word is a general term for something very pleasing or enjoyable.
* Great: This is a simple and versatile word that can be used in many situations.
* Top-notch: This word emphasizes the highest quality.
The best word to use will depend on the specific context. Think about what you want to emphasize: quality, rarity, skill, beauty, etc.