iff - WordReference.com Dictionary of English

Forum API

- See Also:
- - idolatry
  - idolize
  - IDP
  - idyll
  - iechyd da
  - IEE
  - IEEE
  - if
  - IF
  - IFC
  - iff
  - iffy
  - IFR
  - Iftar
  - Ig
  - Igbo
  - igloo
  - igneous
  - ignimbrite
  - ignis fatuus
  - ignite
- Settings:
- - Click on word:
    gets translation
    does nothing
- - Recent searches:
    - Save history
    - View All
- Links:
- WR Random Word:
- Try out WordReference Random Word! Each page load will return a random word from the dictionary. Or test your knowledge and have each page load with the definition hidden!

iff

in Spanish | in French | in Italian | English synonyms | in context | images

Concise Oxford English Dictionary © 2008 Oxford University Press:
iff/ɪf/

▶conjunction Logic & Mathematics if and only if.

– origin 1950s: arbitrary extension of if.

'iff' also found in these Oxford entries:

Forum discussions with the word(s) "iff" in the title:

Ask in the forums yourself.Visit the English Only Forum.

Look up "iff" at Merriam-Webster
Look up "iff" at dictionary.com

In other languages: Spanish | French | Italian | Portuguese | German | Russian | Polish | Romanian | Czech | Greek | Turkish | Chinese | Japanese | Korean | Arabic

Download free Android and iPhone apps

Android App

iPhone App

Report an inappropriate ad.