Synonyms of show stopper

Noun

1. show-stopper, showstopper, stopper, act, routine, number, turn, bit

usage: an act so striking or impressive that the show must be delayed until the audience quiets down

2. show-stopper, showstopper, attraction, attractiveness

usage: 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"