deceptive tonality
Telling a lie in tonality that makes the lie more believable, and kills any doubts.
Some people use a deceptive tonality to reinforce a lie they are telling. For example, they will answer, “No,” but in a tonality that says it would be unthinkable for that person to have said or done what they are saying they did not say or do, and they may even intimidate the listener so he will feel stupid if he ever doubted or dared to question their statement.