his/her ignorance
He soon revealed his ignorance.
Él a menudo se aprovecha de su ignorancia.
He often takes advantage of her ignorance.
Su fracaso se debe a su ignorancia.
Their failure is due to their ignorance.
Cuanto más sabe un hombre, más descubre su ignorancia.
The more a man knows, the more he discovers his ignorance.
¿Acaso el Altísimo no perdonará a tales personas su ignorancia?
Will the Most High not forgive such people for their ignorance?
— Andrei Rublev (1966)
Ella está enfadada por su ignorancia.
She is angry at his ignorance.
Además de su ignorancia, él también es arrogante.
Besides his ignorance, he is also arrogant.