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

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

Recent Examples of Synonyms for supposititious
illegitimate
Adjective
  • The only one that can be called truly illegitimate by global and historical standards is the claim to the whole of the South China Sea.
    Anatol Lieven, Twin Cities, 10 Apr. 2026
  • Parker, with the bank’s fraud department, asked Schroeder about several legitimate transactions and one illegitimate one.
    Justin Wingerter, Denver Post, 6 Apr. 2026
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Browse Nearby Words

Podcast

Cite this Entry

“Supposititious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supposititious. Accessed 20 Apr. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster