illogical

[ih-loj-i-kuhl] / ɪˈlɒdʒ ɪ kəl /

ADJECTIVE

not making sense

Synonyms

STRONGEST

absurd false groundless implausible inconsistent incorrect irrational irrelevant preposterous senseless unreasonable unscientific untenable

WEAK

casuistic cockeyed fallacious fatuous faulty hollow inconclusive incongruous inconsequent invalid mad meaningless not following nutty off the wall screwy self-contradictory sophistic sophistical specious spurious unconnected unproved unsound unsubstantial wacky without basis without foundation

Antonyms

STRONGEST

correct logical rational reasonable right sensible true wise

WEAK

meaningful

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Publishing them means that other people can read and scrutinize them, and mock the justices when they write illogical, unsupported or embarrassing opinions.

From Salon • Apr. 22, 2026

The idea that a warning should change the legal calculus of excessive force, now at the center of both of these cases, is callous and illogical.

From Slate • Apr. 21, 2026

"The bill is unevidenced, illogical and will help no-one in Scotland - least of all greyhounds," he said.

From BBC • Mar. 18, 2026

Elections experts expressed dismay over Johnson’s comments, calling them baseless and illogical.

From Los Angeles Times • Feb. 4, 2026

Both acts were as illogical as adding 1 + 1 to get 3.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

Vocabulary lists containing illogical

Inside Out & Back Again

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The Devil's Arithmetic

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Way Off: Synonyms for "Wrong"

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