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counterexample

counterexample

5 7.4
An example that shows a statement is not always true
  • noun
  • /ˌkaʊntərˈɛkˌsæmpəl/
  • Specialized
translation icon : contr ejemplo
  • During the debate, she mentioned a counterexample that showed the opposing argument was flawed.
  • provides a counterexample
  • a significant counterexample

So at present, mathematicians don't really know how small the counterexamples can be.

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Examples

  • You are once again invited to address the list of counterexamples to your "argument."

    Blog text (13)
  • The theory cannot be accepted as true since the study presented a clear counterexample that disproved it.

  • Why are you offering Europe as a counterexample to the U.S.?

    Blog text (2)
  • I guess we could say it's not a real counterexample because the statement is still "partly meaningful."

    Blog text (2)
  • "Many times, in trying to prove it, I find a counterexample; then I have to change my conjecture."

    Academic text (1991)
  • You have mentioned Portugal as a good counterexample to the US approach of criminalization.

    Blog text (31)
  • The decision in Stoll offers a counterexample to Riggins.

    Academic text (2016)
  • It was a very inconvenient counterexample to all these other countries in the world that had locked down.

  • It's somewhat amusing that the very same bit you quoted contained the counterexample that rendered your claim incorrect.

    Blog text (15)
  • Dante is simply one of the millions of counterexamples that undermine the claim that religion produces these effects.

    Academic text (2011)

Synonyms

counterargument
vscounterexample
11 5.1

A reason that disagrees with another reason in a discussion

is a single concrete example that disproves by showing an exception
refutation
vscounterexample
  • Formal
10 6.8

An argument or evidence that proves a claim wrong

is a single instance showing an exception rather than full proof
counterevidence
vscounterexample
1 8.6

Information that shows a claim may be wrong

is a single concrete instance that shows an exception
counter-evidence
vscounterexample
1 6.9

Information that goes against a claim

is a single concrete instance that shows an exception

Antonyms

150 2.0

Information that shows something is true

Surface Forms

Morphology

counterexample = example (transparent) = counter + example

The prefix 'counter-' (against/opposed) combines directly with 'example' to indicate an example that opposes or refutes a claim, a meaning readily inferable from the parts.

Etymology

Counterexample comes from two parts: counter- meaning 'against', as in counterattack, and example meaning 'an example'. So a counterexample is an 'example against' an idea that shows the idea is not always true.