disingenuous
adjective/ˌdɪsɪnˈdʒenjuəs/
/ˌdɪsɪnˈdʒenjuəs/
[not usually before noun] (formal)- not sincere, especially when you pretend to know less about something than you really do
- It would be disingenuous of me to claim I had never seen it.
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disingenuous