Your father was telling his story in complete ignorance.
My ignorance of his language and culture caused problems in our communication.
(= my lack of understanding/knowledge)
The man is either totally ignorant of the facts or an abject liar.
He who remains ignorant of these shall never be able to bring to pass any wonderful matter.
The baron had a great disdain for the ignorant peasants.
You are ignorant.
She was ignorant of the facts and spoke without understanding the situation.
She was ignorant of the new company policy, causing her to make mistakes in her work.
The ignoramus kept calling out in class at random.
She made an ignorant assumption about the situation, not bothering to seek out all the facts.
You are totally ignorant. He was ignorant of the contributions of black women to the space age until he read "Hidden Figures".
A lot of kids at my school are ignorant to the downsides of receiving bad grades.
He spoke with such ignorant confidence, not realizing the full extent of his mistake.
Despite being presented with evidence, he remained ignorant to the facts and continued to spread misinformation.
That ignorant canoeist is heading for a fall.
Calling someone ignorant isn't vilification.
A supremacist attitude is actually quite ignorant.