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 of groundless in a Sentence

Recent Examples on the Web

The relationship is clearly hostile and at the front of mind, which is why Trump seems determined to will Biden back into the race with groundless claims of a convention coup. —Philip Elliott, TIME, 13 Aug. 2024

Not when a good old fashioned groundless conspiracy is being waved in front of them. —Pat Beall, Orlando Sentinel, 21 July 2024

Writing for the dissent, Sotomayor said the majority’s fear that the case could result in a slippery slope of constitutional challenges is groundless. —Andrea Castillo, Los Angeles Times, 21 June 2024

Laurel Meadows sued in New Britain Superior Court, claiming the rejection was groundless and against the evidence. —Don Stacom, Hartford Courant, 12 Mar. 2024