FOUNDATIONLESS Synonyms: 92 Similar and Opposite Words

foundationless

adjective

Definition of foundationless

as in unreasonable

having no basis in reason or fact a careful investigation proved that the charges were foundationless

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 foundationless Buying a foundationless house is not the only real-estate mistake Handler has made. — Kim Velsey, Curbed, 11 Mar. 2026

Recent Examples of Synonyms for foundationless

Adjective

The Saturday order said that expecting LeVota’s attorneys to adequately prepare for trial before April would be unreasonable and that denying the request could interfere with his right to effective legal representation.

— Ben Wheeler, Kansas City Star, 17 Aug. 2026
In her lawsuit, Phyllis Zorn said the raid violated protections for a free press, safeguards against unreasonable searches by law enforcement and a federal law that limits searches and seizures of journalists' materials.

— Thao Nguyen, USA Today, 13 Aug. 2026

Definition of unreasonable

Adjective

How sad that aiding much healthier and happier living comes with baseless lawsuits.

— John Tamny, Forbes.com, 18 Aug. 2026
Judge Lebovits ruled in favor with the Times according to New York State’s Anti-SLAPP law, which protects against baseless legal proceedings stemming from attempts to stifle the press or free speech.

— Fran Hoepfner, Vulture, 28 July 2026

Definition of baseless

Adjective

The investigating officers in the 2012 Delray Beach incident determined the allegations against Caruso to be unfounded, according to police records, after the child did not tell them about any untoward incident in interviews.

— Claire Heddles, Miami Herald, 20 Aug. 2026
Based on the data, 71% of the 485 grievances were deemed as unfounded or rejected by detention center officials.

— Vanessa Romo, NPR, 20 Aug. 2026

Definition of unfounded

Browse Nearby Words

foundation

foundationless

foundations

See all Nearby Words

Cite this Entry

Style

“Foundationless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foundationless. Accessed 26 Aug. 2026.

Copy Citation

Synonyms of foundationless

adjective

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

devolve

Popular in Grammar & Usage

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

How to Pronounce the Trickiest Menu Items

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

Words from the 'Odyssey'

The Longest Long Words List

Even More Words That Sound Like Insults But Aren't

The Words of the Week - Aug. 21

16 Glee-ridden Words from Schitt's Creek

Popular

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Words from the 'Odyssey'

The Longest Long Words List

Games & Quizzes