men·da·cious /menˈdeɪʃəs/ adjectiveadj formal DISHONESTnot truthful 不真实的,虚假的 mendacious propaganda 虚假的宣传
—mendaciously adverbadv
mendacious• But Legasov's reassurance at Vienna was not as mendacious as many believed.• a secretive and mendacious government• If they carry on confounding chronology in this mendacious manner, they are likely to hit 30 as I reach 60.