EFF


Meaning of EFF in English

v. sl. euphem. 1 tr. & intr. (often foll. by off) = FUCK (in expletive use). 2 intr. say fuck or similar coarse slang words. effing and blinding using coarse slang.

[ name of the letter F, as a euphemistic abbr. ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.