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Use "willfully" in a sentence
"That is why those who would remain willfully ignorant about this insist that following it would lead to bad things."
"Scholars are always saying that journalists lack subtlety about religion, but it seems to me that David Hein willfully misses the subtlety of my article."
"And your mocking use of “chosen people” is an ignorant and bigoted and condescending distortion of a religious doctrine that has already been explained to you, and of which you choose to remain willfully ignorant."