"Outright falsehood" refers to a statement or claim that is completely untrue or incorrect. It means that the information being provided is intentionally false, with no element of truth to it. Full definition
Soon, Schneiderman started finding outright falsehoods in the board's statements. (splinternews.com)
Often those involve exaggerations, white lies or outright falsehoods on loan applications. (themortgagereports.com)
A statement by Colonel Muhammad Dole, Deputy Director Army Public Relations, described the allegation as outright falsehood with intent to drag the military into party politics. (dailypost.ng)