superfluity

noun
UK /ˌsuːpəˈfluːəti/
US /ˌsuːpərˈfluːəti/

A superfluity is a much bigger amount of something than you need.

There was a superfluity of cake at the party, so everyone took some home.


OTHER MEANINGS

2. Something that is not needed or useful.

The extra chair was a superfluity in the tiny room.

3. The state of having more than is necessary.

The superfluity of rules made the game confusing.

4. An unnecessary luxury or frill.

He spent his money on superfluities like gold pens.