n.

1. 謬誤；謬論；謬見[C]
   It's a popular fallacy that success always brings happiness.

   認為成功總是帶來幸福是一種普遍的謬見。

2. 謬誤的推理[C][U]
   This is a statement based on fallacy.

   這是一項基於謬誤推理之聲明。

n.

1. a mistaken belief.
2. Logic  a failure in reasoning which renders an argument invalid.