Definition

A lack of logical thinking or reasoning; irrational behavior or ideas.

Example

His arguments were filled with unreason, making it hard to take him seriously.

Conversation

Can you believe what he said during the meeting?

I know, it was pure unreason and totally out of place.

Right? Sometimes I wonder how he gets away with such nonsense.

Maybe it's just his way of handling pressure — but it doesn't make sense!

Synonyms & Antonyms

Root Explanation

Unreason → It is formed from "un-" (meaning not) and "reason" (from Latin "ratio", meaning a rational thought or judgment). The word "unreason" means the absence of rational thought or judgment.

Memory Tip

Think of 'not' ('un-') having 'rational thought' ('reason') — that's why unreason means a lack of rational thinking.

Visually Confused Words