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
Other Comparisons: What's the difference?
(mathematics, logic) if and only if; used to show that the truth values of two statements are the same.
* formal logic
(euphemistic, slang) Fuck.
- Eff off!
- And he kept saying, "Effing this, effing that."
Eff' is used to replace ' fuck as a taboo swearword but not in its sense of "to copulate".
* eff all
* eff and blind
* eff off