Exhilaratory is often used to describe things that are exciting, energizing, and uplifting. But what about when the opposite is true? Some antonyms for exhilaratory include dull, boring, monotonous, unstimulating, and uninspiring. These words describe things that don't bring excitement or enthusiasm, and instead leave us feeling lethargic or uninterested. Other antonyms might include gloomy, depressing, or disheartening. Some people might even argue that exhilaratory is a somewhat rarefied term, and that more common phrases like "exciting" or "energizing" might better capture the same general sentiment. Ultimately, the right antonym for exhilaratory will depend on the specific context in which it is being used.