Related Clues:

• Still to be perused
• Like much spam
• Alternative to ''stamped''
• Like letters marked 'Return to sender'
• Like much urban street parking
• Like most cabs
• Like much small print
• Like unopened email
• Yet to be studied
• Old illiterate discovered in Cajun readership
• Old illiterate found in Cajun readership
• Stamped by a mail machine
• Under a false impression, but not taken in
• 'Algernon was -- in the hearts of women' (Meredith, Rhoda Fleming)
• (Of book) not used