Surfeit is a word that means excess quantity or overindulgence. It comes from Old French sorfet, which is the past participle of surfaire, meaning "to overdo". Surfaire is composed of sur-, meaning "over", and faire, meaning "to do". Faire comes from Latin facere, which means "to make, do". An example of surfeit is a surfeit of wheat that lowers the price. ^{wiktionary.org 1 2}