Certain
Certain adjective - Known but not named.
Demonstrated and certain are semantically related. In some cases you can use "Demonstrated" instead an adjective "Certain".
Demonstrated
Demonstrated adjective - Having been demonstrated or verified beyond doubt.
Certain and demonstrated are semantically related. Sometimes you can use "Certain" instead an adjective "Demonstrated".
Mutual synonyms
Both words in one sentence
- Certain nonhuman entities, particularly those known as the Outsiders and the Faerie Queens, have demonstrated abilities that are, if anything, greater.
- Star Trek has this demonstrated all over the place, many alien species have progressed to a certain technological point and just leave it at that.
Source: Creative Sterility - Ramming certain vehicles together when both are occupied can cause a 'launch,' sending vehicles rocketing through the air at insane speeds, as demonstrated in this video.
Cite this Source
Demonstrated and Certain. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/certain/demonstrated
Certain & Demonstrated. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/certain/demonstrated>.
Demonstrated or Certain. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/certain/demonstrated.
Google Ngram Viewer shows how "certain" and "demonstrated" have occurred on timeline