"I keep trying to tell you, I'm not completely ignorant."

I'd be completely ignorant of the situation if you hadn't been kind enough to fill me in.

I am not completely ignorant of these matters, you know.

Are you mad or just completely ignorant to the matters at hand?

I think his pleasure was merely to talk about it in that calm way to a completely ignorant young girl.

So he wasn't completely ignorant of history, the way Julio had been.

Until quite lately she had been completely ignorant that for women such things existed.

"I was completely ignorant of how difficult it was going to be."

It was a wild guess but she hated appearing completely ignorant.

No one assumes they're completely ignorant on a subject, even if they are.