Definition of Counterexample

an example that contradicts a theory or opinion

Examples of Counterexample in a sentence

The math teacher provided a counterexample to prove to the student that her solution was incorrect.  🔊

By providing a counterexample, the scientist was able to convince his colleague that his initial theory was invalid.  🔊

The politician’s own actions are a counterexample to his statements, proving that what he says isn’t true.  🔊

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