Uncertain and Undetermined

Uncertain

Uncertain adjective - Not established beyond doubt; still undecided or unknown.
Usage example: a manuscript of uncertain origin

Undetermined is a synonym for uncertain in opinion topic. In some cases you can use "Undetermined" instead an adjective "Uncertain", when it comes to topics like certain, open, ambiguous, doubtful. popular alternative

Nearby Words: uncertainty, uncertainly

Undetermined

Undetermined adjective - Not yet settled or decided.
Usage example: the fate of the prisoners is still undetermined

Uncertain is a synonym for undetermined in opinion topic. You can use "Uncertain" instead an adjective "Undetermined", if it concerns topics such as certain, open, ambiguous, unsure. popular alternative

Nearby Word: undeterminable
Cite this Source
Undetermined and Uncertain. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/uncertain/undetermined
Uncertain & Undetermined. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/uncertain/undetermined>.
Undetermined or Uncertain. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/uncertain/undetermined.
Google Ngram Viewer shows how "uncertain" and "undetermined" have occurred on timeline