Questionable
Questionable adjective - Giving good reason for being doubted, questioned, or challenged.
Sly and questionable are semantically related. In some cases you can use "Sly" instead an adjective "Questionable".
Sly
Sly adjective - Clever at attaining one's ends by indirect and often deceptive means.
Questionable and sly are semantically related. Sometimes you can use "Questionable" instead an adjective "Sly".
Mutual synonyms
Cite this Source
Sly and Questionable. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/questionable/sly
Questionable & Sly. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/questionable/sly>.
Sly or Questionable. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/questionable/sly.
Google Ngram Viewer shows how "questionable" and "sly" have occurred on timeline