[ im-pur-tn-uh n-see ]
/ ɪmˈpɜr tn ən si /
noun, plural im·per·ti·nen·cies.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for impertinency
Here also are the Scottish Commissioners, who every day bring some new proposal to the King, full of impertinency.Rupert Prince Palatine|Eva Scott