/ Dictionary / Index D decorous: Meaning and Definition of Find definitions for: dec•o•rous Pronunciation: (dek'ur-us, di-kôr'us, -kōr'-), [key] — adj. characterized by dignified propriety in conduct, manners, appearance, character, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: decorous (Thesaurus) decorator decorticate 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