Knockout
Topper
Topper noun - Something (as a fact or argument) that is decisive or overwhelming.
Usage example: there are lots of good reasons we can't go to the concert, but the fact that the tickets are all sold out is the topper
Knockout and topper are semantically related. Sometimes you can use "Knockout" instead a noun "Topper".
Mutual synonyms
Cite this Source
Topper and Knockout. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/knockout/topper
Knockout & Topper. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/knockout/topper>.
Topper or Knockout. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/knockout/topper.
Google Ngram Viewer shows how "knockout" and "topper" have occurred on timeline