fallaciousness
Quality of deception
Fallaciousness is the quality of being fallacious—that is, based on faulty reasoning or containing a logical error.
It describes arguments, beliefs, or claims that appear sound but rest on flawed foundations.
The fallaciousness of his reasoning became apparent once we examined his premises.
The term is formal and appears most often in academic or legal contexts where precision about logical validity matters.
Deceptive reasoning
- sophismMisleading logical trickery
- non sequiturIllogical conclusion or remark
- invalidityState of being void
- unsoundnessLack of stability or validity
illogicality · speciousness · circular reasoning · equivocation · red herring · straw man · ad hominem · slippery slope
Disposition to mislead
- duplicityDeliberate misleading behavior
- guileSly, strategic dishonesty
- chicaneryDeception through clever manipulation
- subterfugeDeliberate deception to conceal
fraudulence · disingenuousness · artifice · trickery · dissembling · imposture · charlatanism · quackery
Deliberate untrue statement
- mendacityDisposition to lie
- untruthfulnessDisposition toward false statements
- dishonestyDisposition toward falsehood
- fabricationDeliberately untrue statement
prevarication · misstatement · distortion · misinformation · disinformation · canard · myth · perjury
Quality of misleading belief
- illusorinessQuality of deceiving perception
- chimeraUnrealistic fantasy or hybrid
- delusionStubbornly held false belief
- mirageAtmospheric optical deception
phantasm · figment · apparition · self-deception · wishful thinking · pipe dream · fool's paradise
State of being incorrect
- incorrectnessState of being wrong
- mistakennessState of being wrong
- inaccuracyLack of precision
- wrongnessState of being incorrect
misconception · misinterpretation · faultiness · defectiveness · spuriousness · misconstrual · misapprehension · misunderstanding
sophistry
Deceptive reasoning
- sophismMisleading logical trickery
- non sequiturIllogical conclusion or remark
- invalidityState of being void
unsoundness · illogicality · speciousness · circular reasoning · equivocation · red herring · straw man · ad hominem · slippery slope · begging the question
deceitfulness
Disposition to mislead
- duplicityDeliberate misleading behavior
- guileSly, strategic dishonesty
- chicaneryDeception through clever manipulation
subterfuge · fraudulence · disingenuousness · artifice · trickery · dissembling · imposture · charlatanism · quackery · flimflam
falsehood
Deliberate untrue statement
- mendacityDisposition to lie
- untruthfulnessDisposition toward false statements
- dishonestyDisposition toward falsehood
fabrication · prevarication · misstatement · distortion · misinformation · disinformation · canard · myth · perjury · falsification
delusiveness
Quality of misleading belief
- illusorinessQuality of deceiving perception
- chimeraUnrealistic fantasy or hybrid
- delusionStubbornly held false belief
mirage · phantasm · figment · apparition · self-deception · wishful thinking · pipe dream · fool's paradise
erroneousness
State of being incorrect
- incorrectnessState of being wrong
- mistakennessState of being wrong
- inaccuracyLack of precision
wrongness · misconception · misinterpretation · faultiness · defectiveness · spuriousness · misconstrual · misapprehension · misunderstanding · misbelief
fallaciousnessvalidity
Quality of being sound
soundness · cogency · reasonableness · rigor · coherence
fallaciousnesstruth
Accordance with reality
truthfulness · veracity · accuracy · correctness · factuality
fallaciousnesscredibility
Quality inspiring trust
trustworthiness · reliability · dependability · soundness · honesty
false, fallacy, fallacious, infallible, falsify, falsity, fallibility, fallacies, fallaciously