Disingenuous

ˌdɪsɪnˈdʒɛnjʊəs

adjective

not candid or sincere, typically by pretending that one knows less about something than one really does

The word 'disingenuous' comes from the Latin word 'disingenuus,' meaning of base or low birth. It evolved over time to its current usage to describe someone who is not straightforward or honest in their communication.

See how Victor Hugo and T. E. Lawrence use "disingenuous", with its meaning, pronunciation and real book examples.