Certain
Certain adjective - Known but not named.
Undeclared and certain are semantically related. In some cases you can use "Undeclared" instead an adjective "Certain".
Undeclared
Undeclared adjective - Not announced or openly acknowledged.
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Synonyms for Undeclared
Certain and undeclared are semantically related. Sometimes you can use "Certain" instead an adjective "Undeclared".
Mutual synonyms
Cite this Source
Undeclared and Certain. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/certain/undeclared
Certain & Undeclared. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/certain/undeclared>.
Undeclared or Certain. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/certain/undeclared.
Google Ngram Viewer shows how "certain" and "undeclared" have occurred on timeline