Synonyms of well-founded

well-founded

adjective

1

as in logical

according to the rules of logic

even a well-founded argument can lead to an erroneous conclusion if one of the premises is incorrect

Synonyms & Similar Words

• logical
• reasonable
• valid
• rational
• coherent
• good
• sensible
• analytical
• analytic
• well-grounded
• sound
• consequent
• empirical
• justifiable
• empiric
• cognitive
• a priori
• defensible
• sustainable
• syllogistic
• tenable
• supportable
• a posteriori
• defendable
• maintainable

Antonyms & Near Antonyms

• irrational
• unreasonable
• weak
• illogical
• illegitimate
• invalid
• unsound
• fallacious
• specious
• misleading
• incoherent
• inconsequential
• sophistical
• unarticulated
• casuistical
• sophistic
• casuistic
• unscientific
• inconsequent
• absurd
• preposterous
• stupid
• mad
• insane
• fatuous
• nonsensical
• crazy
• eristic
• simpleminded
• harebrained
• thoughtless
• nutty
• loony
• eristical
• unconvincing
• witless
• daffy
• senseless
• cockeyed
• half-baked
• weak-minded
• half-witted
• looney
• uncompelling

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• irrational
• unreasonable
• weak
• illogical
• illegitimate
• invalid
• unsound
• fallacious
• specious
• misleading
• incoherent
• inconsequential
• sophistical
• unarticulated
• casuistical
• sophistic
• casuistic
• unscientific
• inconsequent
• absurd
• preposterous
• stupid
• mad
• insane
• fatuous
• nonsensical
• crazy
• eristic
• simpleminded
• harebrained
• thoughtless
• nutty
• loony
• eristical
• unconvincing
• witless
• daffy
• senseless
• cockeyed
• half-baked
• weak-minded
• half-witted
• looney
• uncompelling

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2

as in reasonable

based on sound reasoning or information

a well-founded complaint about the business's treatment of its customers

Synonyms & Similar Words

• logical
• reasonable
• reasoned
• valid
• rational
• sensible
• justified
• good
• solid
• true
• informed
• hard
• commonsense
• plausible
• firm
• validated
• sober
• commonsensical
• credible
• levelheaded
• real
• just
• actual
• convincing
• substantiated
• commonsensible
• certain
• confirmed
• sure
• cogent
• certified
• verified
• corroborated
• colorable

Antonyms & Near Antonyms

• unfounded
• unreasonable
• irrational
• groundless
• unjustified
• illogical
• invalid
• unsound
• uninformed
• unwarranted
• nonsensical
• unsubstantiated
• nonrational
• unsupported
• unreasoned
• weak
• implausible
• unconvincing
• flimsy
• false
• nonvalid
• misguided
• fallacious
• misled

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• unfounded
• unreasonable
• irrational
• groundless
• unjustified
• illogical
• invalid
• unsound
• uninformed
• unwarranted
• nonsensical
• unsubstantiated
• nonrational
• unsupported
• unreasoned
• weak
• implausible
• unconvincing
• flimsy
• false
• nonvalid
• misguided
• fallacious
• misled

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