Definition

A mistaken belief or idea that is based on incorrect reasoning or arguments.

Example

The argument presented was based on a fallacy, leading to a wrong conclusion.

Conversation

I read an article that pointed out a common fallacy in logic.

Oh really? What kind of fallacy are they talking about?

It said people often confuse correlation with causation, which is a big mistake.

That makes sense, it's easy to assume one thing causes another without proof.

Synonyms & Antonyms

Root Explanation

Fallacy → It is formed from "fallere" (meaning to deceive) and the suffix "-acy" (indicating a state or quality). The word "fallacy" refers to the state of being deceptive or misleading in reasoning.

Memory Tip

Think of the word 'deceive' — 'fallacy' describes a situation where reasoning is misleading or false.

Visually Confused Words