Definition

An example that shows that a statement or theory is not true by providing a case where it does not apply.

Example

The mathematician provided a counterexample to prove that the theory was incorrect.

Conversation

I was reading about that theory in math class today.

Oh really? Did they mention any counterexample to it?

Yes, they provided a great counterexample that disproved it completely.

That's interesting! I love when a good counterexample challenges our assumptions.

Synonyms & Antonyms

Root Explanation

Counterexample → It is formed from "counter-" (meaning against) and "example" (from Latin "exemplum", meaning a model or pattern). The word refers to an example that goes against a general rule or proposition.

Memory Tip

Think of an 'example' that is 'against' something — 'counter-' means against, and 'example' means a model. This helps you remember that a counterexample is an example that contradicts a rule.

Visually Confused Words