Related Clues:

• Hardly ever
• '___ again ...'
• Storybook beginning
• In times past
• Serial starter
• '___ bitten ...'
• Storybook starter
• '___ upon a time'
• Almost never?
• ___ upon a time
• Popular story start
• Immediately, after 'at'
• Fairy tale word
• Some years back
• ''--- bitten, twice shy''