×
completely contrary to nature, reason, or common sense; utterly foolish; absurd; senseless: a preposterous tale.
People also ask
The meaning of PREPOSTEROUS is contrary to nature, reason, or common sense : absurd. How to use preposterous in a sentence.
From Latin praeposterus (“with the hinder part before, reversed, inverted, perverted”), from prae (“before”) + posterus (“coming after”).
Preposterous definition: Contrary to nature, reason, or common sense; absurd.
completely unreasonable and ridiculous; not to be believed: It was a preposterous idea, and no one took it seriously.
​completely unreasonable, especially in a way that shocks or annoys you synonym outrageous. These claims are absolutely preposterous!
adjective · absurd · bizarre · foolish · unreal · insane · fantastical · crazy · fanciful · strange · ridiculous.