don't know, be unaware of, ignore, disregard
Elles ignorent ce qu'elles vont faire.
They don't know what they're going to do.
Tu crois qu'ils ignorent ce que tu sais ?
Do you think they don't know what you know?
— Independence Day (1996)
Mes camarades et ma maîtresse m'ignorent aussi.
My classmates and my teacher ignore me too.
— The Man From Nowhere (2010)
Tom et Marie ignorent leur lieu de naissance.
Tom and Marie don't know where they were born.