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

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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 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

As in Williams’ case, attorneys argued that a sweep had violated the plaintiffs’ Fourth Amendment rights protecting them from unreasonable search and seizure, as well as their 14th Amendment right to due process.

— Ariane Lange, Sacbee.com, 24 Mar. 2026
Because that is ultimately what The Secret Garden is about—the stubborn, almost unreasonable insistence of living things to grow toward the light.

— Literary Hub, Literary Hub, 23 Mar. 2026