Related Clues:

• Unused
• Groundbreaking
• Hot off the presses
• Cutting-edge
• Best-seller list entry
• Untrained
• Unheard-of
• Never used
• Atypical
• Unfamiliar, as territory
• Opposite of 53-Down
• Spanking follower
• Recent
• Ad catchword
• 'Lord Jim' or 'Lucky Jim'