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Iff vs Eff - What's the difference?

iff | eff |

As initialisms the difference between iff and eff

is that iff is interchange File Format, a file format standard developed for Amiga computers while EFF is Electronic Frontier Foundation

As an abbreviation iff

is if and only if; used to show that the truth values of two statements are the same.

As a verb eff is

fuck.

iff

English

Abbreviation

(Abbreviation) (head)
  • (mathematics, logic) if and only if; used to show that the truth values of two statements are the same.

    • Related terms

    * if

    See also

    * formal logic

    eff

    English

    Alternative forms

    * ef

    Verb

  • (euphemistic, slang) Fuck.
    • Eff off!
    And he kept saying, "Effing this, effing that."

    Usage notes

    Eff' is used to replace ' fuck as a taboo swearword but not in its sense of "to copulate".

    Derived terms

    * eff all * eff and blind * effing * eff off ----