illogic

American

[ih-loj-ik] / ɪˈlɒdʒ ɪk /

noun

the state or quality of being illogical; illogicality.

His speech was full of illogic.

illogic British

/ ɪˈlɒdʒɪk /

noun

reasoning characterized by lack of logic; illogicality

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of illogic

First recorded in 1855–60; il- ² + logic

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.

Wilson operated outside of conventional narrative, trusting in the magic of unexpected illogic.

From Los Angeles Times • May 11, 2026

During an MS NOW television interview in late April, Martin used head-spinning illogic to defend concealing the autopsy and denied he was “here to protect anyone.”

From Salon • May 5, 2026

They’d teach techniques to punch through the static, to see the illogic in conspiracy theories, to find the facts behind the false narratives that can sometimes shape our lives.

From Seattle Times • Mar. 31, 2024

Good litigators learn that it’s better to leave such illogic on the cutting-room floor and stand on their stronger arguments.

From Slate • Dec. 4, 2023

Every time mathematicians tried to deal with the infinite or with zero, they encountered trouble with illogic.

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023