Definition of spectacularly adverb from the Oxford Advanced Learner's Dictionary in a very impressive way synonym breathtakingly It has been a spectacularly successful year. The Oxford Learner’s Thesaurus explains the difference between groups of similar words.

In a spectacular manner, extraordinarily, amazingly. Spectacularly is an adverb that describes something done in an impressive, dramatic, or eye-catching manner. It refers to actions that are striking, remarkable, or extraordinarily impressive in quality or appearance.