The phrase "deep ignorance" is correct and usable in written English.
It can be used to describe a profound lack of knowledge or understanding about a particular subject.
Example: "His deep ignorance about the topic was evident during the discussion."
Alternatives: "profound ignorance" or "extreme ignorance."
Coates replied: "You are further evidencing your deep ignorance.
Undertaking this journey in a state of deep ignorance, we told ourselves, would help mitigate pomposity.
My minimalist approach was the result of poverty, laziness and deep ignorance of all things design-related.
"It is your desire to cover your deep ignorance of black people, with a facade of expertise.
Most of their prescriptions are issued in deep ignorance of how a novel gets on to the page.
All of them sent out of the world with words unworthy of them, eulogies that revealed only a deep ignorance of who they really were.
It also seems to me that David Miliband's use of language reflects a lack of concern about food values and culture, and a deeper ignorance of how industrial farming has affected the countryside and the quality of our food.
VICE News went to the post-funeral goodbye, and found a deep, blissful ignorance of Ford's epic failings, and a genuine, almost-spiritual belief that he was one of the best people Toronto had ever produced.
Related: Toronto's Infamous Former Mayor Rob Ford Dead at 46. VICE News went to the post-funeral goodbye, and found a deep, blissful ignorance of Ford's epic failings, and a genuine, almost-spiritual belief that he was one of the best people Toronto had ever produced.
I am very pessimistic about getting people to eat less' (GP.1) It was felt that there was just too big a gulf between a healthy diet and what the children actually ate: 'Their perception of a good diet is so far adrift from what anyone else would consider a normal diet' (GP.5) 'The diet is difficult as there is often deep seated ignorance... about what are good foods and what are bad foods.
Of course, the dichotomy he maintains is reactionary, but it's due to a deep fatalism, not ignorance".
