Synonyms of foundationless

foundationless

adjective

as in unreasonable

having no basis in reason or fact

a careful investigation proved that the charges were foundationless

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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