What does IFF mean?if and only if
Other definitions of IFF:
All of our slang term and phrase definitions are made possible by our wonderful visitors. If you know of another definition of IFF that should be included here, please let us know.
How to use the term IFF:
There are no example uses of IFF at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:
Unidentified Drinking Injury
Just In Time
Do Not Use