adjective fal·la·cious \fə-ˈlā-shəs\

: containing a mistake : not true or accurate

Full Definition of FALLACIOUS

:  embodying a fallacy <a fallacious conclusion>
:  tending to deceive or mislead :  delusive
fal·la·cious·ly adverb
fal·la·cious·ness noun

Examples of FALLACIOUS

  1. <it's fallacious to say that something must exist because science hasn't proven its nonexistence>
  2. <consumers who harbor the fallacious belief that credit-card spending will never catch up with them>

First Known Use of FALLACIOUS


Other Logic Terms

a posteriori, connotation, corollary, inference, mutually exclusive, paradox, postulate, syllogism


Next Word in the Dictionary: fallacyPrevious Word in the Dictionary: fall (adjective)All Words Near: fallacious
July 03, 2015
interpellate Hear it
to formally question a public official
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears