GROUNDLESS Synonyms: 92 Similar and Opposite Words

groundless

adjective

ˈgrau̇n(d)-ləs

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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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

Recent Examples of Synonyms for groundless

Adjective

Indeed, because deportation is not considered a criminal matter, the constitutional provisions protecting those accused and convicted of crimes do not apply, including prohibiting unreasonable searches and seizures, providing a lawyer and requiring a jury trial.

— Erwin Chemerinsky, Twin Cities, 8 Apr. 2026
That has prompted constitutional concerns around the Fourth Amendment, which prevents unreasonable search and seizure.

— Lisa Hagen, Hartford Courant, 7 Apr. 2026