feindre l'ignorance signifie anglais

connive [connived, conniving, connives]▼(to pretend to be ignorant of something in order to escape blame)
verb
[UK: kə.ˈnaɪv] [US: kə.ˈnaɪv]

play the fool▼(pretend ignorance)
verb
[UK: ˈpleɪ ðə fuːl] [US: ˈpleɪ ðə ˈfuːl]