English Thesaurus

Synonyms of 'illogical'

(adjective) 
Definition
not following logical principles
his completely illogical arguments
Synonyms
irrational
an irrational fear of science
,
absurd
They go to absurd lengths just to avoid paying a few pounds.
,
unreasonable
The strikers were being unreasonable in their demands.
, ,
incorrect
He denied that his evidence was incorrect.
,
faulty
Their interpretation was faulty.
, ,
invalid
Those arguments are rendered invalid by the hard facts.
,
senseless
acts of senseless violence
,
spurious
a spurious framework for analysis
, ,
unsound
The thinking is muddled and fundamentally unsound.
,
unscientific
,
specious
The Duke was not convinced by such specious arguments.
,
fallacious
Their argument is fallacious.
,
untenable
He claimed the charges against him were untenable.
,
sophistical
Opposites

Additional synonyms

in the sense of absurd
Definition
obviously senseless or illogical
They go to absurd lengths just to avoid paying a few pounds.
in the sense of fallacious
Their argument is fallacious.
in the sense of faulty
Their interpretation was faulty.

See related content

NEW from Collins!
NEW from Collins!
English Word Lists
English Word Lists
Latest Word Submissions
Latest Word Submissions
Easy Learning English Grammar
Easy Learning English Grammar
COBUILD Grammar Patterns
COBUILD Grammar Patterns
Word Lover's Blog
Word Lover's Blog
Online Scrabble Checker
Online Scrabble Checker
The Paul Noble Method
The Paul Noble Method

Video: pronunciation of 'illogical'

Source

Thesaurus for illogical from the Collins English Thesaurus
Life on the edge
The desire to push the boundaries has been a motivator in many a daring expedition, testing the human spirit and physical abilities to the utmost. Indulge your adventurous spirit by exploring some associated ‘extreme’ vocabulary. Will you have the survival skills to master our quiz?
Read more
Study guides for every stage of your learning journey
Whether you're in search of a crossword puzzle, a detailed guide to tying knots, or tips on writing the perfect college essay, Harper Reference has you covered for all your study needs.
Read more
Create an account and sign in to access this FREE content
Register now or login in to access