Assertion
Assertion noun - A solemn and often public declaration of the truth or existence of something.
Opinion and assertion are semantically related in declaration topic. In some cases you can use "Opinion" instead a noun "Assertion", when it comes to topics like proposition.
Opinion
Opinion noun - An idea that is believed to be true or valid without positive knowledge.
Assertion and opinion are semantically related in proposition topic. Sometimes you can use "Assertion" instead a noun "Opinion".
Nearby Words: opinionated, opined, opining
Mutual synonyms
Related pairs
How words are described
Both words in one sentence
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He isn't too fond of Triple H for helping to kill WCW, although so far, we have only Trips' inflated self-opinion to back up that assertion.
Source: Wrestling / Sting
Cite this Source
Opinion and Assertion. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/assertion/opinion
Assertion & Opinion. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/assertion/opinion>.
Opinion or Assertion. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/assertion/opinion.
Google Ngram Viewer shows how "assertion" and "opinion" have occurred on timeline