1. an unnecessarily large amount of something; excess
2. something that is not needed or wanted; something unnecessary

Examples

• The wedding had a superfluity of flowers decorating every surface.
• In times of economic hardship, many luxuries become a superfluity.
• The report contained a superfluity of unnecessary details.
• She donated the superfluity of clothes from her closet to charity.
• The restaurant’s menu offered a superfluity of choices that overwhelmed diners.
• His speech was criticized for its superfluity of words and lack of substance.