The phrase "bringing down the house" is often used to describe a performance or event that is so successful, it generates an overwhelming response from the audience. Antonyms for this phrase could include "underwhelming," "lackluster," "subdued," or "disappointing." These words indicate that the event or performance did not live up to expectations and failed to elicit a strong reaction from the audience. Other possible antonyms might include "unremarkable," "unimpressive," "forgettable," or "unexciting." While these words may not necessarily imply a negative experience, they do suggest that the event or performance was not memorable or noteworthy.