as in unreasonable
having no basis in reason or fact
the accusation proved to be unfounded
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Recent Examples of unfounded
Her most recent Coachella performance drew unfounded commentary likening it to Satanist rituals.
—
Samira Asma-Sadeque, People.com, 6 May 2025
For Parker, the accusation that Moretti used too much force was also unfounded.
—Grethel Aguila, Miami Herald, 12 May 2025
Creating a spinoff series around the villain who killed Rick Flagg (Joel Kinnaman) in The Suicide Squad was a bold move but my initial doubts proved unfounded.
—ArsTechnica, 11 May 2025
Murdoch reportedly offered Trump advice during his 2016 campaign, but the relationship cooled somewhat when his outlets were critical of the president's unfounded claims of widespread voter fraud during the 2020 presidential election.
—Dan Gooding
gabe Whisnant, MSNBC Newsweek, 9 May 2025
See All Example Sentences for unfounded
Samira Asma-Sadeque, People.com, 6 May 2025
For Parker, the accusation that Moretti used too much force was also unfounded.
—Grethel Aguila, Miami Herald, 12 May 2025
Creating a spinoff series around the villain who killed Rick Flagg (Joel Kinnaman) in The Suicide Squad was a bold move but my initial doubts proved unfounded.
—ArsTechnica, 11 May 2025
Murdoch reportedly offered Trump advice during his 2016 campaign, but the relationship cooled somewhat when his outlets were critical of the president's unfounded claims of widespread voter fraud during the 2020 presidential election.
—Dan Gooding
gabe Whisnant, MSNBC Newsweek, 9 May 2025
See All Example Sentences for unfounded
Recent Examples of Synonyms for unfounded
Adjective
-
The vast majority of post commenters assured the OP that her feelings are completely valid and that her mother is being unreasonable.—
Toria Sheffield,
People.com,
7 June 2025
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But leading the team to the Finals is not an unreasonable request.—
Troy Renck,
Denver Post,
6 June 2025
Adjective
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The site has a history of promoting groundless conspiracy theories.—
Tom Dreisbach,
NPR,
20 Feb. 2025
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On Thursday, Gottlieb and Hudson blasted the lawsuit as legally groundless and an effort to silence the actress.—
Daniel S. Levine,
People.com,
21 Mar. 2025
Adjective
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Trump fired Krebs, who directed the Cybersecurity and Infrastructure Security Agency, in November 2020 after Krebs disputed the Republican president’s unsubstantiated claims of voting fraud and vouched for the integrity of the 2020 election, which Trump lost to Democrat Joe Biden.—
Rebecca Santana,
Los Angeles Times,
3 June 2025
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But Gallego and several council members opposed the agreement, calling the accusations unsubstantiated and others asking for a full review before adopting it.—
Alicia Victoria Lozano,
NBC news,
25 May 2025
Cite this Entry
“Unfounded.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfounded. Accessed 14 Jun. 2025.
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