Related Clues:

• In olden days
• In days of yore
• Second word in many a limerick
• Without repetition
• Days of ___
• Never again
• Back in time
• Days past
• "Going ___, going ..."
• At the moment when
• Start of a tale
• "For ___ in My Life" (Stevie Wonder)
• Not repeatedly
• Times gone by
• Quondam