SYNONYMS AND RELATED EXPRESSIONS
fallacious
adjective
Based on faulty reasoning or a mistaken assumption.
Local English device voice, when available. This is not a recorded dictionary pronunciation.
Based on faulty reasoning
Closest synonyms
Related words and expressions
These extend or explain the idea and may require a different sentence structure.
Usage distinction
Return to topSpecious suggests an argument that looks sound at first; fallacious identifies a defect in its reasoning or assumptions.
CHECK THE MEANING IN CONTEXT
See fallacious in use
The argument was fallacious because its conclusion did not follow from its premise.
Another visitor offered a fallacious argument: because the drawing was attractive, it must have been made by the famous illustrator.
Compare an alternative with the original word in each passage. Shared meanings do not make every pair interchangeable.
Synonym reference scope and sources
The groups distinguish the senses selected for this study entry. Closest synonyms and broader related expressions have separate labels. The listed sources support lexical selection; not every phrase is a direct quotation from a source.
How the synonym reference was prepared / WordNet 3.0 license