It is the acronym of the "Foundation for urgent Spanish", a site where our community will look for words and expressions to copy and paste here as a query. And to pay homage to this custom, copy and pego of the website of the foundation its own definition: "Fundéu BBVA is a foundation sponsored by the Efe Agency and BBVA, advised by the SAR, whose objective is to collaborate with the good use of Spanish in the media and on the Internet". It should be clarified that the BBVA name is by the bank that supports them for their operation, as well as the Spanish agency EFE news, and the SAR, which is the acronym for "Real Academia Española" de Letras .