Unscramble Usifs

What is the meaning of word usifs unscrambled?

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

Make more words by adding or removing letters

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

1. fuss - Definition of fuss

2. 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 sifs
2) Removing the letter S and unscrambling uifs
3) Removing the letter I and unscrambling usfs
4) Removing the letter F and unscrambling usis
5) Removing the letter S and unscrambling usif

More anagrams containing the letters U S I F S
usisf ussfi sisuf fisus