"showstoppers" in the noun sense
1. show-stopper, showstopper, stopper
an act so striking or impressive that the show must be delayed until the audience quiets down
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"
Source: WordNet® (An amazing lexical database of English)
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