Wordiyo
RootsVocabularyCoursesGuidesMy WordsPricing
Wordiyo

Build your English vocabulary systematically through roots and etymology.

Explore

  • Roots
  • Vocabulary
  • My Words

Learn

  • Guides
  • Pricing

Company

  • About
  • Terms
  • Privacy

© 2026 Wordiyo.

  1. Home
  2. /fall
  3. /fallacy

fallacy

UK/'fælәsi/US
IELTSGREC2

Definitions

n.

A mistaken belief, especially one based on unsound or deceptive reasoning.

谬见,错误的信念(尤指基于不可靠或误导性推理的)。

n.

(Logic) a flaw in an argument that makes it invalid.

(逻辑学)谬误,使论证无效的推理缺陷。

Root Breakdown

Root-derived
fallto fall, to be deceived, to err, to be false
+
-acycharacterized by
=fallacy

fall- (from Latin fallere, to deceive) + -acy (state, quality) = a deceiving piece of reasoning. A fallacy looks sound but trips up your thinking — exactly fallere's image of a hidden trap. It means faulty reasoning, not just any random mistake.

Root fall still carries 12 more words

Common Collocations

  • 1.common fallacy常见的谬见
  • 2.logical fallacy逻辑谬误
  • 3.expose a fallacy揭穿谬误
  • 4.the fallacy that……的谬见
  • 5.fall for a fallacy落入谬误

Example Sentences

  • 1.

    It's a common fallacy that money always brings happiness.

  • 2.

    The lawyer exposed the fallacy at the heart of the argument.

  • 3.

    Believing the past predicts the future is the gambler's fallacy.

Easily Confused

fallacy vs falsehood — a fallacy is faulty reasoning or a mistaken belief (it can be sincerely held); a falsehood is simply an untrue statement, often a deliberate lie. A fallacy fools the thinker; a falsehood is told to fool the listener.

Word Forms

Noun

Pluralfallacies

Derivatives

fallaciousfalliblefallibility
← Back to fall