Unscramble Usiff

What is the meaning of word usiff unscrambled?

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

Make more words by adding or removing letters

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

1. Sufi - Definition of Sufi

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter U and unscrambling siff
2) Removing the letter S and unscrambling uiff
3) Removing the letter I and unscrambling usff
4) Removing the letter F and unscrambling usif
5) Removing the letter F and unscrambling usif

More anagrams containing the letters U S I F F
ffisu ffius fufis fuifs