Related Clues:

• Abbr. on a certain elevator button
• Come again, like a nightmare
• House opening?
• Happen over
• Keep happening
• Confined, with ''up''
• Pop up again
• Repressed, with "up"
• Happen periodically
• Happen more than once
• Return to the mind
• Confined (with ''up'')
• Bottled, with "up"
• Confined, with "up"
• Crop up anew