/ Dictionary / Index L letter-perfect: Meaning and Definition of Find definitions for: let•ter-per•fect Pronunciation: (let'ur-pûr'fikt), [key] — adj. knowing one's part, lesson, or the like, perfectly. precise or exact in every detail; verbatim. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: letter-perfect (Thesaurus) letter of marque letterpress Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language