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
  • International observers, however, have widely dismissed the election as illegitimate, held amid ongoing conflict and mass displacement.
    Miranda Jeyaretnam, Time, 23 Jan. 2026
  • The alternative is a politics in which the state survives by making dissenters illegitimate as citizens.
    Stephanie A, The Conversation, 22 Jan. 2026
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“Supposititious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supposititious. Accessed 31 Jan. 2026.

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