"Common or garden" is an expression typically used to describe something that is ordinary or basic. The antonyms for this phrase would be words that convey a sense of uniqueness, rarity, or exclusivity. Some examples may include "uncommon," "exceptional," "extraordinary," "unique," "distinctive," "rare," and "unusual." These words highlight qualities that are not commonly found and indicate a sense of value and importance. Using antonyms like these can add depth and nuance to your writing or speech, allowing you to convey a more specific meaning or emotion. So next time you find yourself describing something as "common or garden," consider using one of these antonyms to create a more interesting and dynamic message.