6
stuff(verb, stop, close, block, top)
6
tap(noun, seal, plug, controller, pipe)
6
top(noun, verb, stop, close, block)
6
wall(noun, hindrance)
5
close(verb, stop, break, check, halt)
5
dam(verb, stop, close, halt, block)
5
lid(noun, cover, top, point, case)
5
showstopper
5
spile(noun, plug)
5
stop up(verb, expression, phrasal verb, stop, close)
4
blockade(noun, verb, stop, close, halt)
4
congest(verb, stop, break, close, check)
4
finisher
4
hat
4
occlude(verb, stop, break, close, check)
4
plug up(verb, expression, phrasal verb, stop, seal)
4
show-stopper
4
valve(noun, device, plug)
3
barricade(verb, stop, close, check, halt)
3
capsule
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APASmart Define. (2015). stopper thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stopper/thesaurus/synonyms
ChicagoSmart Define. 2015. "stopper thesaurus" https://smartdefine.org/stopper/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, stopper thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stopper/thesaurus/synonyms>.
MLASmart Define. "stopper thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/stopper/thesaurus/synonyms>