No sources are cited for this preposterous assertion.

Five years ago, during the Clinton administration, The Weekly Standard made the broad, seemingly preposterous assertion that America was entitled and even compelled to engineer regime change in Iraq.

Nathan Myhrvold makes the preposterous assertion that calls for a ban on cloning amount to discrimination against people based on another genetic trait.

Mr. Reeves's preposterous assertion does not deserve any comment, but I wish to correct certain erroneous "facts" on which he has based his argument.

Moments later, Mr. Cochran labeled as "preposterous, absolutely preposterous" assertions that Mr. Simpson had beaten his first wife, Marquerite Simpson Thomas.

To this expanded claim, Ainsworth simply responded on 11 April 1872, "I disdain to reply to Mr. Cruikshank's preposterous assertions, except to give them, as before, a flat contradiction."

But in my own life and work, I am the unwelcome contrary; I am the refutation of such preposterous, indeed, outrageous assertions.

The preposterous assertion about "stocking of guns and attack dogs" reeks of sensationalism.

Those preposterous assertions, and "Citizen's United", are now the law of the land.

"Where did you get the information to make such a preposterous assertion?"