preposterous

Indeed, Trump has long been advised to “flood the zone” with so many off-the-cuff and preposterous ideas and promises that the opposition can barely adjust to establishment news formats to counter them.

Murray added: "There were one or two questions as to whether he would fit in here. That now seems preposterous."

Let’s end the preposterous problem of power lines that start these fires.

"We will move with purpose and speed to bring back hope, prosperity, safety and peace for citizens," he lied, with a weariness that made this preposterous statement even more laughable.

It is always technically possible that the Louisiana Republican is so profoundly ignorant of history that he didn't know that statement is preposterous on its face.