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Iff vs Iffy - What's the difference?

iff | iffy |

As an initialism iff

is interchange file format, a file format standard developed for amiga computers.

As an adjective iffy is

(slang) of dubious authenticity, legitimacy or legality.

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

    iffy

    English

    Adjective

    (er)
  • (slang) Of dubious authenticity, legitimacy or legality.
    • He's selling new CD players for £20 each – that sounds a bit iffy to me.
  • Uncertain or chancy.
    • The weather is still iffy for Saturday's shuttle launch.

    Synonyms

    * (of dubious authenticity) dodgy, dubious, fishy * See also

    Related terms

    * iffiness

    Anagrams

    *