Synonyms of groundless

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

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Examples Sentences

Recent Examples of groundless

Trump has long spread groundless claims about his opponents based on their personal history, particularly women and racial minorities. —Michelle L. Price, Fortune, 20 Oct. 2024

The rider who smashed his phone insisted in an interview with Chinese state media that the complaint lodged against him was groundless. —Chris Lau, CNN, 17 Oct. 2024

Trump has persisted in pushing the groundless rumors since the debate, posting a string of memes about it on Truth Social. —Erin Doherty, Axios, 17 Sep. 2024

Yoon in May and July rejected consecutive bills calling for special prosecutors to investigate the marine’s death, describing the allegations as groundless and politically motivated. —Kim Tong-Hyung, Los Angeles Times, 2 Sep. 2024