Definition of preposterous in English:

preposterous

Syllabification: pre·pos·ter·ous
Pronunciation: /prəˈpäst(ə)rəs
 
/

adjective

Contrary to reason or common sense; utterly absurd or ridiculous: a preposterous suggestion
More example sentences
  • I believe these authorities to be wasting your time and taxes on this utterly preposterous project.
  • Their position is so utterly preposterous it could be construed as libel.
  • My list of possibilities, like anyone else's, is utterly preposterous.
Synonyms

Origin

mid 16th century: from Latin praeposterus 'reversed, absurd' (from prae 'before' + posterus 'coming after') + -ous.

Derivatives

preposterously

adverb
More example sentences
  • The idea is so preposterously stupid - and thoroughly executed - that it flips over into the realm of sheer genius.
  • The preposterously implausible Moroccan tale is my all-time favourite.
  • What you might not expect is quite how preposterously far-fetched the final act is.

preposterousness

noun
More example sentences
  • The preposterousness of this claim is boundless.
  • There is a preposterousness in the book and the script which distances the audience from both the storyline and the characters.
  • The film revels in its preposterousness, and works for this very reason.

Definition of preposterous in:

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Word of the day flippant
Pronunciation: ˈflipənt
adjective
not showing a serious or respectful attitude