refutal

Besides the in-house monitors who already scan posts for forbidden topics, operators in recent months have set up “rumor refutal” departments, staffed by editors, to investigate and knock down information deemed false.

His course was a crushing refutal of the inflammatory proclamations of Gov.

Pity the words spent in the refutal of such "reasons" and views!

He had rarely, if ever, known his daughter to make such an explicit refutal of his inferences.

Such argument is hardly worthy of serious refutal, since it stultifies itself.