/ Dictionary / Index D discourtesy: Meaning and Definition of Find definitions for: dis•cour•te•sy Pronunciation: (dis-kûr'tu-sē), [key] — pl. -sies. lack or breach of courtesy; incivility; rudeness. a discourteous or impolite act. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: discourtesy (Thesaurus) discourteous discover Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language