/ Dictionary / Index I Improperia: Meaning and Definition of Find definitions for: Im•pro•pe•ri•a Pronunciation: (im"pro-pēr'ē-u), [key] — n. (used with a pl. v.) reproach (def. 8). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. improper fraction improper integral Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language