Related Clues:

• ''Going ___, going ...''
• At a previous time
• "Measure twice, cut ---"
• When dinosaurs roamed
• Start of many a story
• At a prior time
• In time past
• Without repeat
• In days past
• Enough, in some cases
• One time
• It's enough, for some
• It may never be enough
• ___-over (cursory glance)
• ''__ upon a time . . .''