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There are 7 words beginning with IFF

IFFiff conj. (Mathematics, logic) Short for if and only if.
iff conj. Obsolete spelling of if.
IFF prop.n. Initialism of Interchange File Format, a file format standard developed for Amiga computers.
IFFYiffy adj. (Slang) Of dubious authenticity, legitimacy or legality.
iffy adj. Uncertain or chancy.
IFFY adj. full of uncertainty.
IFFIERiffier adj. Comparative form of iffy: more iffy.
IFFY adj. full of uncertainty.
IFFILYiffily adv. (Informal) In an iffy manner.
IFFY adv. full of uncertainty.
IFFIESTiffiest adj. Superlative form of iffy: most iffy.
IFFY adj. full of uncertainty.
IFFINESSiffiness n. The state or quality of being iffy.
IFFINESS n. the state of being iffy.
IFFINESSESIFFINESS n. the state of being iffy.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 10 words
  • Scrabble in French: no word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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