disingenuous
/ˌdɪsɪnˈdʒɛnjuəs/
adjective
- Not honest or sincere; pretending to know less than one really does.
- The politician gave a disingenuous answer to avoid the real issue.
- It was disingenuous of him to claim he didn't know about the meeting.
- Her disingenuous apology fooled no one.