Meaning

noun the state of being more than full

noun the quality of being so overabundant that prices fall

noun eating until excessively full

originFrom Middle English surfeite, surfet, a borrowing from Anglo-Norman surfet, surfeit and Old French sorfet, sorfait, past participle of surfaire (“to augment, exaggerate, exceed”), from sur- (“over”) + faire (“to do”). The adjective is derived from the noun.

Etymology from Wiktionary, CC BY-SA 3.0