Assertion
Assertion noun - A solemn and often public declaration of the truth or existence of something.
Say so and assertion are semantically related. in declaration topic. In some cases you can use "Say so" instead a noun "Assertion".
Say so
Mutual synonyms
Cite this Source
Say so and Assertion. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/assertion/say_so
Assertion & Say so. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/assertion/say_so>.
Say so or Assertion. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/assertion/say_so.
Google Ngram Viewer shows how "assertion" and "say so" have occurred on timeline