Word Type

Adjective

Adjective

The word "fallacious" can be used as adjective and adjective.

Word Relationships

Derived Terms

fallaciously fallaciousness nonfallacious unfallacious

Derived From

fallacy

Related Terms

deluded delusive fail failure fallacy fallibilism fallibilist fallibility fallible false falsifiable falsification falsificator falsifier falsify falsity faulty illogical illusive illusory

Related Terms

deceitful deceiving deceptive delusive erroneous fail failure fallacy fallibilism fallibilist fallibility fallible false falsifiable falsification falsificator falsifier falsify falsity faulty illogical illusive illusory incorrect misleading mistaken specious wrong

Similar Terms

dishonest dishonorable incorrect incorrect invalid invalid wrong

Synonym Network

fraudulent

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.