Related Clues:

• "___ my word!"
• "___ the Roof" (Drifters hit)
• Proficient in
• On top of
• Capping
• Fairy-tale preposition
• Conver-sant with
• At the time of
• 'Once -- a time ...'
• Sitting atop
• At the crown
• It often follows 'once'
• Word often following 'once'
• At the highest point
• "__ the Roof" (Drifters song)