fallacy
/ˈfæləsi/
noun
- A mistaken belief, especially one based on unsound reasoning or a false idea.
- It's a common fallacy that lightning never strikes the same place twice.
- The idea that you need to drink eight glasses of water a day is a fallacy.
- He pointed out the fallacy in her argument about the economy.
- A flaw in logic that makes an argument invalid or unsound.
- In debate class, we learned to identify fallacies like circular reasoning.
- The article contained a fallacy known as a false dilemma.
- The ad hominem attack is a type of logical fallacy.
Synonyms