EFF

EFF may refer to: The Effective Federal funds rate
Electronic Frontier Foundation, a U.S. non-profit advocacy group
Economic Freedom Fund, a U.S. political organization
Equipped for the Future, a U.S. non-profit adult literacy project
Election Fighting Fund, a UK fundraising organisation in the 1910s
Ethiopian Football Federation, the governing body of football in Ethiopia
Evergreen Freedom Foundation, a U.S think-tank
European Fisheries Fund, a fund allocated by the European Union
DC Environmental Film Festival, a festival held annually in Washington, DC

Eff may refer to: The English spelling of the letter f
The pronunciation equivalent of an F indicating a failing grade US Education Grading System
A euphemism for the word fuck

Translation

The word "EFF" occurs as such in the following languages: English, German, Norwegian (Bokmål).