Definition of ill-founded in English:



  • (especially of an idea or belief) not based on fact or reliable evidence.

    ‘ill-founded criticism’
    ‘her fear may be ill-founded’
    • ‘It follows that this part of the application is inadmissible as being manifestly ill-founded…’
    • ‘On the other hand, the motion for contempt, a serious matter, was ill-founded, given the fact that the formal order was never taken out.’
    • ‘In my view, that concept is ill-founded, as a matter of law.’
    • ‘Patients will not be granted discovery where their claims are ill-founded, irresponsible and speculative allegations based merely on hope.’
    • ‘Rather, it is the predictable result of ill-founded pedagogical choices.’
    • ‘As it happens the attack was ill-founded and unjust; but the perception lingers.’
    • ‘Therefore, I conclude that the Warsaw Convention applies to this case and that the plaintiff's claim based on misrepresentation is ill-founded, both in fact and in law.’
    • ‘By contrast, the Constitutional Court dismissed the appeal as ill-founded in respect of the right to property.’
    • ‘Our Supreme Court's elimination-of-bias continuing education requirement is utterly ill-founded and obnoxious.’
    • ‘Consequently, the Court found that that part of the complaint was ill-founded.’
    • ‘Their example makes plain that saying I am merely interpreting Scripture actually proves nothing at all if the interpretation is ill-founded and unfaithful.’
    • ‘Subsequent campaigns showed that this belief was ill-founded.’
    • ‘The barrage of well-meaning, but often ill-founded, criticism hardly makes a mother's job easier.’
    • ‘The decision that an application is manifestly ill-founded can necessarily be taken only in relation to rights set forth in the European Convention.’
    • ‘I have however held that that assumption is ill-founded.’
    • ‘There has been a lot of ill-founded and mischievous speculation about these arrests and some ill-considered and aggressive comment directed at our organisation.’
    • ‘Thus the argument is that attachments and loyalty are ill-founded if placed upon a human artifact, upon something man-made.’
    • ‘So I'm happy that there's a protest even if it is a silly and ill-founded one.’
    • ‘But such suspicions are probably ill-founded.’
    • ‘This is an insulting and ill-founded belief which I would advise you to reconsider.’
    baseless, groundless, without foundation, foundationless, without basis, unjustified, unsupported
    unsubstantiated, unproven, unverified, uncorroborated, unconfirmed, unauthenticated, not backed up by evidence, speculative, conjectural
    unsound, unreliable, questionable, misinformed, misguided, spurious, trumped-up
    View synonyms



/ˈil ˈˌfoundəd/