lettered (adj.)

• abecedarian
• abstruse
• allographic
• alphabetic
• capital
• civilized
• cultivated
• cultured
• deep
• educated
• encyclopedic
• enlightened
• erudite
• ideographic
• knowledgeable
• learned
• literal
• literary
• literate
• logogrammatic
• logographic
• majuscule
• minuscular
• minuscule
• pictographic
• profound
• scholarly
• scholastic
• studious
• uncial
• well-educated
• well-informed
• well-read
• wise