Related Clues:

• Unaware
• Unenlightened
• Unlearned
• In the dark
• Like junk mail, usually
• Uninformed
• Discourteous
• Like much junk mail
• Like junk mail, perhaps
• Unknowing
• Like books collecting dust
• Lacking knowledge
• Like a brand-new book
• Like new e-mails
• Out of the loop