The act of ennobling or something which ennobles(noun)
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Use "ennoblement" in a sentence
"a nation of new civilisation by what may be called the ennoblement of its lower classes."
"To be cut out by a prince has always been a kind of ennoblement in itself."
"In the 1960s in Poland, getting a prison tattoo required special skills and criminal ambition - it was a kind of ennoblement, each tattoo in the criminal world was meaningful."