artfulness craftiness deceitfulness dishonesty disingenuousness doubtfulness falseheartedness falsehood fibbery fibbing forswearing fraud implausibility inconceivability incredibility insincerity intrigue lying mendaciousness mendacity mythomania perjury pseudology questionableness sharp practice truthlessness unbelievability unbelievableness uncandidness uncandor unfrankness unreliability unsincereness untenableness untruthfulness unveraciousness