What is a synonym for extraordinary?

Here are some synonyms for "extraordinary," depending on the specific nuance you want to convey:

General Synonyms:

* Remarkable

* Exceptional

* Uncommon

* Unusual

* Outstanding

* Phenomenal

* Amazing

* Wonderful

* Splendid

* Impressive

* Noteworthy

More Specific Synonyms:

* For something impressive in size or scope: Monumental, Grandiose, Colossal

* For something unique or unusual: Peculiar, Singular, Outlandish

* For something exceeding expectations: Surpassing, Unprecedented, Unparalleled

* For something inspiring awe: Awe-inspiring, Magnificent, Sublime

The best synonym will depend on the context of your sentence.