The state of being truthless, untruthfulness.(noun)
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Use "truthlessness" in a sentence
"CNN most often leaves out reporting on right wing truthlessness so to seem unbiased, but instead makes it look like that CNN supports some of those right wing agendas."
"Mainstream media's job is to point out truth and truthlessness."
"We'll stop listening to the truthlessness of your Hannitized Kool-aid rants and your Limbaughed line of fear-paralyzed thought."