"Emptor" is the correct answer to the popular crossword puzzle clue, "Who is Nero's buyer?" Nero was emperor of Rome from 54 to 68 A.D. He led a hedonistic lifestyle, exemplified by allegedly playing his fiddle during the Great Fire of Rome.
The word "emptor" means "buyer" in Latin. It is frequently used in the phrase, "Emptor caveat," which means "Let the buyer beware." The phrase warns purchasers to exercise due diligence before committing to a transaction. It implies that the product or service might contain hidden flaws that are the buyer's responsibility to discover, rather than the seller's to disclose.