as in unreasonable
having no basis in reason or fact
please stop making groundless accusations against innocent people fears of a strike proved groundless
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
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.
Recent Examples of groundless
Secretary Kennedy’s team seeks to make autism compensable under vaccine-injury rules, turning diagnoses into groundless lawsuits while draining resources from real causes and care.
—
Tom Frieden, Scientific American, 21 Nov. 2025
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
Datebook Picks Asked about the incident, Rojo firmly denied that there had been anything improper, and pointed out that the allegations were investigated by both the company’s board and the Arts Council and found to be groundless.
—Joshua Kosman, San Francisco Chronicle, 11 Jan. 2022
See All Example Sentences for groundless
Tom Frieden, Scientific American, 21 Nov. 2025
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
Datebook Picks Asked about the incident, Rojo firmly denied that there had been anything improper, and pointed out that the allegations were investigated by both the company’s board and the Arts Council and found to be groundless.
—Joshua Kosman, San Francisco Chronicle, 11 Jan. 2022
See All Example Sentences for groundless
Recent Examples of Synonyms for groundless
Adjective
-
Those fears are not unreasonable, either, given the ability of AI to do so many things so well.—
John Werner,
Forbes.com,
18 June 2026
-
Horn’s assessment wasn’t unreasonable; it was based on recent statements by Greenlandic politicians.—
Ben Taub,
New Yorker,
15 June 2026
Adjective
-
Those concerns and complaints have proven to be wildly unfounded.—
Ian Miller OutKick,
FOXNews.com,
15 June 2026
-
The bill also allows for communication between the state’s health department and IDFPR involving patient abuse allegations, even those a hospital determines are unfounded.—
Emily Hoerner,
Chicago Tribune,
12 June 2026
Adjective
-
On the evening of June 2, his baseless case was further undercut when Republican Steve Hilton won the second spot on November’s ballot for governor, up against Democrat Xavier Becerra.—
Jackie Calmes,
Mercury News,
19 June 2026
-
Skepticism of elections flared up recently in California after Trump made a baseless claim that Democrats were cheating to defeat a Republican candidate for governor and another for Los Angeles mayor.—
Jesse Bedayn,
Chicago Tribune,
16 June 2026
Cite this Entry
“Groundless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/groundless. Accessed 22 Jun. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
