The phrase "how deeply rooted" is grammatically correct and can be used in written English.
It is typically used to describe something that is deeply ingrained or firmly established. Here is an example: "The prejudices and biases of our society are so deeply rooted that it will take generations to challenge and uproot them."
"They show how deeply rooted this new culture of mistreatment became," he said.
The $1.1 billion construction project is perhaps the most visible sign of how deeply rooted Japanese firms are in China.
This only underscores how deeply rooted these patterns are – how embedded they are in our institutions, structures, and governing practices.
Only by moving north have I discovered just how deeply rooted in the South this mid-Atlantic city really is.
"Abhorrent practices like these, no matter how deeply rooted in societies, violate the rights of girls and women across the world, including here in the UK".
The violence last week, he said, was a "reminder of how deeply rooted ethnic and religious divisions are in the society".
These films examine how our deeply rooted experience of gender goes beyond our genitalia -- and even beyond our sexuality.
White nationalist veganism can sound somewhat absurd, but it also shows how complex and deeply rooted this ideology is, and how it can appeal to a variety of different audiences.
I wonder how a filmmaker deeply rooted in a Mediterranean city survives the interminable opaque clouds.
Like many before him, Israel lauds the Enlightenment as that transformative period when Europe shifted from being a culture "based on a largely shared core of faith, tradition and authority" to one in which "everything, no matter how fundamental or deeply rooted, was questioned in the light of philosophical reason".
Efford told the BBC Blatter's comments were "utterly unacceptable and totally outrageous" and "show how he is deeply rooted in a bygone era".
