Related Clues:

• From way back when
• Fairy-tale start
• Head of a tale
• "Just this ---"
• Less than twice
• ''___ upon a time ...''
• It's enough, it's said
• Hardly at all
• Reminiscer's word
• On one occasion
• "__ upon a time ..."
• Fairy-tale first word
• Thrice third
• It might be enough
• Story opener