/ Dictionary / Index L lettered: Meaning and Definition of Find definitions for: let•tered Pronunciation: (let'urd), [key] — adj. educated or learned. of, pertaining to, or characterized by learning or literary culture. marked with or as if with letters. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lettered (Thesaurus) letter drop letterform Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language