Collocations for ignorant - adj.

appear, be, feel, seem, sound
act
I decided to continue acting ignorant, just to make fun of her.

remain, stay (AmE)
The general public remained totally ignorant of the danger.
I wanted to stay ignorant of my fate for a few more precious hours.

keep sb
We were kept ignorant of the facts.

extremely, fairly, very, etc.
completely, entirely, incredibly, plain, profoundly, totally, utterly, wholly
Don't ask Paul. He's completely ignorant.

largely
simply
They are simply ignorant, I'm afraid to say.

blissfully
We went to bed that night blissfully ignorant of the storm to come.

wilfully/willfully
woefully

about
He was completely ignorant about the country's political system.

of
We are still woefully ignorant of the causes of this disease.

Ignorant is used with these nouns:
bliss