[koun-ter-ig-zam-puh l, -zahm-]
an example that refutes an assertion or claim.
Origin of counterexample
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
an example or fact that is inconsistent with a hypothesis and may be used in argument against it
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012