groundless

adjective

ground·​less ˈgrau̇n(d)-ləs How to pronounce groundless (audio)
Synonyms of groundlessnext
: having no ground or foundation
groundless fears
groundlessly adverb
groundlessness noun

Examples of groundless in a Sentence

please stop making groundless accusations against innocent people fears of a strike proved groundless
Recent Examples on the Web
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.
The former proved ultimately groundless while the latter came to pass, but not until the market was glutted. Michael Lynch, Forbes.com, 2 Mar. 2026 Lawmakers, judges and other public servants, all under groundless presidential attack. James D. Zirin, Washington Post, 3 Feb. 2026 Similarly, the course of action that will bring recovery—reviving domestic manufacturing, revitalizing small towns, ensuring fairness for farmers and working people—is not an impossibility that will poison our minds with groundless optimism. Rosa Lyster, Harpers Magazine, 30 Dec. 2025 Those fears weren’t groundless: Research shows that people aren’t especially good at identifying deepfakes. Francesco Agnellini, The Conversation, 24 Nov. 2025 See All Example Sentences for groundless

Word History

First Known Use

1602, in the meaning defined above

Time Traveler
The first known use of groundless was in 1602

Browse Nearby Words

Cite this Entry

“Groundless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/groundless. Accessed 12 Apr. 2026.

Kids Definition

groundless

adjective
ground·​less ˈgrau̇n-(d)ləs How to pronounce groundless (audio)
: not justified : having no real basis
groundless fears
groundlessly adverb
groundlessness noun

More from Merriam-Webster on groundless

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster