paralogism
/pəˈræləˌdʒɪzəm/
noun
- A false or illogical argument, especially one made unintentionally or due to faulty reasoning.
- His conclusion was based on a paralogism, not on solid evidence.
- Learning to spot a paralogism helps you think more clearly.
- The debate fell apart when someone pointed out the paralogism in the main argument.