English → French
ignorance /BrE ˈɪɡn(ə)r(ə)ns 
, AmE ˈɪɡnərəns /
noun
(of person) ignorance f; (of behaviour, manners) manque m
through ignorance par ignorance
to be in ignorance of sth ignorer qch
his ignorance of things scientific son ignorance des choses de la science or
to keep sb in ignorance of sth laisser qn dans l'ignorance de qch
Idioms
ignorance of the law is no excuse
nul n'est censé ignorer la loi
ignorance is bliss
l'ignorance est salvatrice