Definition of supposititiousnext
as in illegitimate
born to a father and mother who are not married entered the world as the supposititious son of a rich lord

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Recent Examples of Synonyms for supposititious
illegitimate
Adjective
  • The nuns then took it upon themselves to make arrangements for the illegitimate child.
    Literary Hub, Literary Hub, 8 May 2026
  • The credit bureaus have said that many recent complaints are illegitimate, including a large volume filed by third-party credit repair organizations that charge customers to challenge negative information on their reports.
    Joel Jacobs, ProPublica, 4 May 2026
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Cite this Entry

“Supposititious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supposititious. Accessed 10 May. 2026.

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