Preposterous definition

prĭ-pŏstər-əs
Contrary to nature, reason, or common sense; absurd.
adjective
10
2
So contrary to nature, reason, or common sense as to be laughable; absurd; ridiculous.
adjective
9
4
Absurd, or contrary to common sense.
adjective
3
0
The definition of preposterous is something that is absurd or ridiculous.

An example of a preposterous idea is that the world is flat.

adjective
2
0
(obs.) With the first last and the last first; inverted.
adjective
4
3
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Origin of preposterous

  • From Latin praeposterus inverted, unseasonable prae- pre- posterus coming behind (from post behind apo- in Indo-European roots)

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin praeposterus (“with the hinder part before, reversed, inverted, perverted"), from prae (“before") + posterus (“coming after").

    From Wiktionary