Questionable
Questionable adjective - Giving good reason for being doubted, questioned, or challenged.
Thinner and questionable are semantically related In some cases you can replace term "Thinner" with "Questionable", this adjectives are similar.
Thinner
Thinner noun - A diluting agent.
Questionable and thinner are semantically related in deficient topic. Sometimes you can use "Questionable" instead an adjective "Thinner".
Mutual synonyms
Cite this Source
Thinner and Questionable. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/questionable/thinner
Questionable & Thinner. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/questionable/thinner>.
Thinner or Questionable. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/questionable/thinner.
Google Ngram Viewer shows how "questionable" and "thinner" have occurred on timeline