Twardlow wrote:
dis·in·gen·u·ous
ˌdisənˈjenyo͞oəs/
adjective
not candid or sincere, typically by pretending that one knows less about something than one really does.
synonyms: insincere, dishonest, unt***hful, false, deceitful, duplicitous, lying, mendacious; hypocritical
"that innocent, teary-eyed look is just part of a disingenuous act"