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Use "teachableness" in a sentence
"Quickly the steward learned Michael's pre-eminent teachableness."
"Anglo – Norman teachableness and wide-heartedness, which has enabled us to profit by the wisdom and civilization of all ages and of all lands, without prejudice to our own distinctive national character."
"She lacked one very important thing: the teachableness that makes us recognize when we need to do a bit of serious revision."