1) Excess 2) Flood 3) Glut 4) Plethora 5) Sate 6) Surfeit 1) Glut 2) Glut on the market 3) Overabundance 4) Overmuch 5) Overmuchness 6) Superabundance 7) Supply with an excess of 8) Surfeit 9) To supply more than is needed 
• (n.) An excessive supply. • (v. t.) To supply in excess.
O'ver·sup·ply` noun An excessive supply. « A general oversupply or excess of all commodities.» J. S. Mill. O`ver·sup·ply' transitive verb To supply in excess.