Questionable and Unprovable

Questionable

Questionable adjective - Giving good reason for being doubted, questioned, or challenged.

Unprovable and questionable are semantically related. in unverified topic. In some cases you can use "Unprovable" instead an adjective "Questionable".

Unprovable

Unprovable adjective - Not provable.
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Synonyms for Unprovable

Questionable and unprovable are semantically related. Sometimes you can replace term "Questionable" with "Unprovable", this adjectives are similar.
Cite this Source
Unprovable and Questionable. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/questionable/unprovable
Questionable & Unprovable. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/questionable/unprovable>.
Unprovable or Questionable. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/questionable/unprovable.
Google Ngram Viewer shows how "questionable" and "unprovable" have occurred on timeline