Is “Counterexample” a Scrabble word?
Yes
COUNTEREXAMPLE
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Counterexample
noun
1.An exception to a proposed general rule; a specific instance of the falsity of a universally quantified statement.