disingenuous

/ˌdɪs.ɪnˈdʒen.ju.əs/

形容词

（人或其行为）不够诚实的，不够坦白的
It was disingenuous of her to claim she had no financial interest in the case.
她声称自己在这个案子中没有任何经济利益，这有些心口不一。