/ Dictionary / Index I impertinency: Meaning and Definition of Find definitions for: im•per•ti•nen•cy Pronunciation: (im-pûr'tn-un-sē), [key] — pl. -cies. impertinence. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. impertinence impertinent Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language