Questionable and Undetermined

Questionable

Questionable adjective - Giving good reason for being doubted, questioned, or challenged.
Usage example: the runner's unexpected first-place finish is questionable, so a drug test has been ordered

Undetermined and questionable are semantically related in opinion topic. In some cases you can use "Undetermined" instead an adjective "Questionable", when it comes to topics like open, debatable.

Undetermined

Undetermined adjective - Not seen or understood clearly.

Questionable and undetermined are semantically related in opinion topic. Sometimes you can use "Questionable" instead an adjective "Undetermined", if it concerns topics such as open, ambiguous, debatable.

Nearby Word: undeterminable
Cite this Source
Undetermined and Questionable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/questionable/undetermined
Questionable & Undetermined. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/questionable/undetermined>.
Undetermined or Questionable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/questionable/undetermined.
Google Ngram Viewer shows how "questionable" and "undetermined" have occurred on timeline