What are the opposite words for unimpressive?

When it comes to antonyms for the word "unimpressive," there are quite a few options to choose from. Some of the most common antonyms include impressive, awe-inspiring, remarkable, extraordinary, outstanding, and stunning. Each of these words carries a sense of importance, excellence, or distinction, which is the opposite of unimpressive. Other antonyms include exceptional, legendary, phenomenal, remarkable, sublime, and unparalleled. It all depends on the context in which the word is being used and the degree of contrast being conveyed. But regardless of the specific antonym used, it is clear that the opposite of unimpressive is something that demands attention and admiration.