Meaning & Definition of Illogical in English

Detailed Definitions

• Definition: Contrary to or disregardful of the rules of logic; irrational.

  Example Sentence: His argument was so illogical that it made no impact.

• Definition: Not adhering to clear or sound reasoning.

  Example Sentence: Her illogical conclusions baffled the experts.

Etymology

Origin: From the prefix 'il-' meaning 'not' + 'logical', from Greek 'logikos'.

Synonyms

Common Phrases and Expressions

• illogical reasoning: reasoning that fails to follow principles of logic
• illogical conclusion: a conclusion drawn that lacks rational basis

Translations

• Spanish: ilógico

• French: illogique

• German: illogisch

• Russian: иллогичный

Related Words

• logic: the science of reasoning, proof, thinking, or inference.

• rational: based on or in accordance with reason or logic.

Slang Meanings of illogical

• Meaning: crazy idea

  Example Sentence: That's such an illogical thing to say; are you out of your mind?

• Meaning: makes no sense

  Example Sentence: Trying to justify that is just illogical, dude!