Related Clues:

• Added extra
• Short luxurious advantage
• "Furthermore ... "
• Useful quality dismissing the good in adverts
• 'Furthermore ... '
• Math sign
• Crossing sign?
• "Let me add . . ."
• Afterthought preceder
• An advantage being very rich, mostly
• Fail as boy, being oddly deficient in addition
• "And plus ..."
• "Add to that . . ."
• 'Just one more thing ... '
• "Just one more thing ... "