Doubts
Unknown quantities and doubts are semantically related. In some cases you can use "Unknown quantities" instead a noun "Doubts".
Unknown quantities
Doubts and unknown quantities are semantically related. You can use "Doubts" instead a noun phrase "Unknown quantities".
Mutual synonyms
Cite this Source
Unknown quantities and Doubts. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/doubts/unknown_quantities
Doubts & Unknown quantities. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/doubts/unknown_quantities>.
Unknown quantities or Doubts. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/doubts/unknown_quantities.
Google Ngram Viewer shows how "doubts" and "unknown quantities" have occurred on timeline