BASELESS Synonyms: 92 Similar and Opposite Words

baseless

adjective

Definition of baseless

as in unreasonable

having no basis in reason or fact baseless rumors that the baseball player was using steroids

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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 baseless Towers said that concerns about consent and explanation of risk are baseless. — Amy Yurkanin, ProPublica, 24 Aug. 2026 And Democratic aides in Washington are preparing members of Congress to push back in the court of public opinion against any baseless claims of voter fraud in competitive districts. — Kevin Rector, Los Angeles Times, 23 Aug. 2026 On the one hand, concerns about AI use in higher education are not baseless. — Christopher Rim, Forbes.com, 21 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 Trump’s narrow loss in Arizona in 2020 and his subsequent — and baseless — insistence that fraud accounted for the defeat has fueled an election denialism that Arizona voters have rarely rewarded. — Arizona Republic, AZCentral.com, 21 July 2026 In an address from the White House tonight, the president sought to reveal proof for his baseless assertions of a 2020 vote marred by fraud. — Michael Scherer, The Atlantic, 17 July 2026 These charges were so baseless that the Cook County State’s Attorney declined to prosecute me and expunged my name and the charge from the record. — Literary Hub, 14 July 2026 State Senator Tony Strickland, who represents Huntington and Newport Beach, said those concerns were baseless. — Haley Parsley, Sacbee.com, 9 July 2026

Recent Examples of Synonyms for baseless

Adjective

The parties have blamed each other for trying to make unreasonable last-minute changes to their agreement.

— Kevin Breuninger,Michael Wayland, CNBC, 24 Aug. 2026
The investigation found Brazilian policies unreasonable or discriminatory toward US commerce.

— Joshua Hong, Fortune, 21 Aug. 2026

Definition of unreasonable

Adjective

Many are leaning into their own unsubstantiated suppositions, even those not backed by evidence.

— Rebekah Riess, CNN Money, 22 Aug. 2026
While unsubstantiated claims and speculation circulate online about what led to the killings, Elikann emphasized the importance of following official facts over social media speculation.

— Kelsie Cairns, FOXNews.com, 15 Aug. 2026

Definition of unsubstantiated

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based

baseless

baseline

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“Baseless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/baseless. Accessed 1 Sep. 2026.

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Synonyms of baseless

adjective

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