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Use "challengeable" in a sentence
"University College Union (UCU) branch secretary Dr Trevor Curnow said the university staff cost figures were "challengeable"."
"Pence, too, will try to be that hybrid tea party candidate as he has been an outspoken opponent of legislation like TARP in addition to carrying un-challengeable or close to it credentials on social issues."
""It was clear that ... in its totality, it challenged civilian control, which is a fundamental principle for us that is not challengeable.""