Synonyms of baseless

baseless

adjective

as in unreasonable

having no basis in reason or fact

baseless rumors that the baseball player was using steroids

Synonyms & Similar Words

• unreasonable
• unfounded
• groundless
• unsubstantiated
• unwarranted
• unsupported
• irrational
• false
• invalid
• unreasoned
• unnecessary
• absurd
• illogical
• misleading
• foundationless
• fallacious
• nonvalid
• meaningless
• unconscionable
• specious
• weak
• inconsistent
• implausible
• wrong
• untenable
• unsound
• unconvincing
• stupid
• misled
• flimsy
• gratuitous
• uncalled-for
• asinine
• nonsensical
• foolish
• nonlogical
• fatuous
• silly
• preposterous
• insane
• unwise
• ill-advised
• wacky
• simpleminded
• brainless
• mad
• senseless
• nutty
• harebrained
• crazy
• crackpot
• half-witted

Antonyms & Near Antonyms

• reasonable
• valid
• good
• justified
• hard
• reasoned
• just
• well-founded
• confirmed
• logical
• rational
• substantiated
• certified
• well-grounded
• true
• real
• actual
• informed
• wise
• sensible
• validated
• certain
• genuine
• sane
• sure
• sober
• corroborated
• verified
• plausible
• clear
• solid
• credible
• sound
• commonsense
• compelling
• persuasive
• convincing
• satisfying
• cogent

Example Sentences

Recent Examples of baseless

This Sunday on 60 Minutes, Patrick Clancy talks about his grief, his memories of his children, and the baseless conspiracy theories that flooded social media since his ex-wife's murder trial. — CBS News, 16 Sep. 2026

At Friday’s hearing, Hearn’s lawyer Levin argued to Edelman that a dismissal with prejudice was required to protect Hearn from being indicted again on baseless charges. — Dan Mangan, CNBC, 4 Sep. 2026

According to the popular—and scientifically baseless—myth, daddy longlegs spiders are among the most venomous spiders, but their fangs are too short to bite humans. — Melissa Petruzzello, Encyclopedia Britannica, 2 Sep. 2026

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