Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun showstopper
2 senses of showstopper
Sense 1
show-stopper, showstopper, stopper -- (an act so striking or impressive that the show must be delayed until the audience quiets down)
=> act, routine, number, turn, bit -- (a short theatrical performance that is part of a longer program; "he did his act three times every evening"; "she had a catchy little routine"; "it was one of the best numbers he ever did")
Sense 2
show-stopper, showstopper -- (something that is strikingly attractive or has great popular appeal; "she has a show-stopper of a smile"; "the brilliant orange flowers against the green foliage were a showstopper")
=> attraction, attractiveness -- (the quality of arousing interest; being attractive or something that attracts; "her personality held a strange attraction for him")