as in unreasonable
having no basis in reason or fact
please stop making groundless accusations against innocent people fears of a strike proved groundless
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Recent Examples of groundless
Earlier this week, Sulton said the new criminal case is groundless and accused prosecutors of bringing additional charges because Spencer rejected a plea deal on the first case.
—
Vanessa Swales, jsonline.com, 17 Oct. 2025
The most extreme version of this debate over Kirk’s views on Israel emerged with shocking velocity after his death, in the form of groundless claims that he’d been killed by the Israelis.
—Ben Smith, semafor.com, 15 Sep. 2025
These radically groundless and unfounded allegations end now.
—Lea Veloso, StyleCaster, 11 Sep. 2025
While Russia, China, and North Korea condemned the U.S. strikes, only Russia called the aggression groundless.
—Natalie Neysa Alund, USA Today, 24 June 2025
See All Example Sentences for groundless
Vanessa Swales, jsonline.com, 17 Oct. 2025
The most extreme version of this debate over Kirk’s views on Israel emerged with shocking velocity after his death, in the form of groundless claims that he’d been killed by the Israelis.
—Ben Smith, semafor.com, 15 Sep. 2025
These radically groundless and unfounded allegations end now.
—Lea Veloso, StyleCaster, 11 Sep. 2025
While Russia, China, and North Korea condemned the U.S. strikes, only Russia called the aggression groundless.
—Natalie Neysa Alund, USA Today, 24 June 2025
See All Example Sentences for groundless
Recent Examples of Synonyms for groundless
Adjective
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Pittman said the defense would not be able to show based on the evidence that Gross’ actions before he was shot were unreasonable.—
Emerson Clarridge
Updated March 5,
Fort Worth Star-Telegram,
5 Mar. 2026
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Breuer listed two city inspectors by name, accusing them of providing unreasonable timelines, intentionally ignoring information provided by Berrada and its right to the appeal, and for entering the property and interfering with repair work.—
Drake Bentley,
jsonline.com,
5 Mar. 2026
Adjective
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Trailing in most polls to a center-right challenger who has promised to restore Hungary's Western alliances and end its dependence on Russian energy, Orbán has ramped up unfounded accusations that Kyiv and the European Union seek to bankrupt Hungary by forcing it to financially assist Ukraine.—
Arkansas Online,
Arkansas Online,
5 Mar. 2026
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Fears that attacks on Iran could trigger a more widespread world war were unfounded.—
Boston Herald editorial staff,
Boston Herald,
5 Mar. 2026
Adjective
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Susman Godfrey represented Dominion Voting Systems in its defamation lawsuit against Fox News stemming from baseless allegations about the integrity of the 2020 election that were broadcast by the network.—
Sarah N. Lynch,
CBS News,
3 Mar. 2026
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The Secretary of State did not provide him an opportunity to address his baseless accusations before rushing to judgment and to the press.—
Olivia Rubin,
ABC News,
26 Feb. 2026
Cite this Entry
“Groundless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/groundless. Accessed 10 Mar. 2026.
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