Definition of preposterous in English:



  • Contrary to reason or common sense; utterly absurd or ridiculous.

    ‘a preposterous suggestion’
    • ‘Because we so value liberty, most Americans would find this view utterly preposterous.’
    • ‘The notion that any club is owed a living by its league is utterly arrogant and preposterous.’
    • ‘It is extraordinary that such self-evidently preposterous claims can be taken seriously by anybody.’
    • ‘It's an indulgent fantasy, saved by Chow's precise comic timing and the preposterous action sequences.’
    • ‘I believe these authorities to be wasting your time and taxes on this utterly preposterous project.’
    • ‘The only reason the idea seems so preposterous is because we refuse to live like them.’
    • ‘So preposterous seemed the suggestion, a stifled laugh was as much as I could offer by way of a response.’
    • ‘Even a sensible idea or a fine principle is exaggerated to the point that it becomes preposterous and untenable.’
    • ‘My list of possibilities, like anyone else's, is utterly preposterous.’
    • ‘Claims that the club is attempting to make ‘a fast buck’ are simply preposterous.’
    • ‘Those three people couldn't have acted in a more absurd and preposterous manner if they had been real actors in a real theatre.’
    • ‘Among the other preposterous suggestions was the idea of building a structure a mile high.’
    • ‘Various reasons had been given, all of them preposterous, he said.’
    • ‘It uses preposterous science fiction to delve into deeper human emotions than the usual fluff with which we are served each spring.’
    • ‘Some may consider it all irresistibly smart, rather than merely preposterous and precocious in equal measure.’
    • ‘It is surely preposterous that modern civilisation as we know it would not only collapse but also leave no reliable account of its fate.’
    • ‘I don't know about you, but I happen to think that this defense is preposterous.’
    • ‘Their position is so utterly preposterous it could be construed as libel.’
    absurd, ridiculous, foolish, stupid, ludicrous, farcical, laughable, comical, risible, hare-brained, asinine, inane, nonsensical, pointless, senseless, insane, unreasonable, irrational, illogical
    outrageous, shocking, astonishing, monstrous, unbelievable, incredible, unthinkable
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Mid 16th century: from Latin praeposterus reversed, absurd (from prae before + posterus coming after) + -ous.