Unscramble Iffud

What is the meaning of word iffud unscrambled?

What 5 letter words can be made from letters I F F U D:

Make more words by adding or removing letters

How many 4 letter words can you make from letters I F F U D?

1. diff - Definition of diff

2. duff - Definition of duff

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling ffud
2) Removing the letter F and unscrambling ifud
3) Removing the letter F and unscrambling ifud
4) Removing the letter U and unscrambling iffd
5) Removing the letter D and unscrambling iffu

More anagrams containing the letters I F F U D
ifudf ifufd fiufd dfuif