1) An instance of this 2) Excess 3) Extreme excess 4) Overabundance 5) Overmuch 6) Overmuchness 7) Superabundance 8) Surplus 9) Surplusage Found on https://www.crosswordclues.com/clue/nimiety
Ni·mi'e·ty noun [ Latin nimietas , from nimius , adjective , nimis , adverb , too much.] State of being in excess. [ R.] « There is a nimiety , a too-muchess, in all Germans.» Coleridge. Found on http://www.encyclo.co.uk/webster/N/23