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Use "dutifulness" in a sentence
"She was given to dutifulness, religious and artistic, and this strengthened her."
"These denominations view that sort of dutifulness as sufficient."
"Great Regulars: One senses that the father has always taken the older son's dutifulness for granted, and that, perhaps, the older son has been so dutiful in order to win some greater measure of his father's love and approval."