fallacious
misleading or based on false reasoning
Roots
- -acious: trait-marking adjective ending
- fallac / fallax: deceptive, misleading, or false-seeming
Other words with the fallac / fallax root
- fallaciously: in a misleading or logically false way
- fallacy: a mistaken or misleading argument
- fallible: capable of making mistakes
- false: not true
Fallac carries deception and -acious gives the trait shape. A fallacious argument looks sturdy but misleads.
The fallacious claim sounded scientific until one number collapsed.