1) Embarrassment 2) Excess 3) Excessiveness 4) Extreme excess 5) Frill 6) French word used in English 7) Inordinateness 8) Overplus 9) Plethora Found on https://www.crosswordclues.com/clue/superfluity
• (n.) Something beyond what is needed; something which serves for show or luxury. • (n.) A greater quantity than is wanted; superabundance; as, a superfluity of water; a superfluity of wealth. • (n.) The state or quality of being superfluous; excess. Found on http://thinkexist.com/dictionary/meaning/superfluity/
Su`per·flu'i·ty noun ; plural Superfluities . [ Latin superfluité , Latin superfluitas . See Superfluous .] 1. A greater quantity than is wanted; superabundance; as, a superfluity of water; a superfluity of wealth. « A quiet mediocri... Found on http://www.encyclo.co.uk/webster/S/241