There are many synonyms for the phrase "bad show" that can be used to describe something that is disappointing or unsatisfactory. Some common alternatives are "poor performance," "unpleasant display," "shoddy production," and "subpar exhibition." Other options include "lackluster presentation," "disappointing spectacle," "substandard show," and "below-average demonstration." Each of these phrases captures the feeling of underwhelming quality or failure to meet expectations. Whether used in a review of a play or a critique of a restaurant meal, these synonyms can help convey a sense of disappointment or frustration with a particular experience.