Questionable and Unconfirmed

Questionable

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

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

Unconfirmed

Unconfirmed adjective - Not finally established or settled.

Questionable and unconfirmed are semantically related in doubtful topic. Sometimes you can use "Questionable" instead an adjective "Unconfirmed", if it concerns topics such as guessed.
Cite this Source
Unconfirmed and Questionable. (2016). Retrieved 2026, August 18, from https://thesaurus.plus/related/questionable/unconfirmed
Questionable & Unconfirmed. N.p., 2016. Web. 18 Aug. 2026. <https://thesaurus.plus/related/questionable/unconfirmed>.
Unconfirmed or Questionable. 2016. Accessed August 18, 2026. https://thesaurus.plus/related/questionable/unconfirmed.
Google Ngram Viewer shows how "questionable" and "unconfirmed" have occurred on timeline