Unscramble Isrfs

What is the meaning of word isrfs unscrambled?

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

Make more words by adding or removing letters

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

1. firs - Definition of firs

2. rifs - Definition of rifs

3. sirs - Definition of sirs

4. sris - Definition of sris

5. SSRI - Definition of SSRI

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling srfs
2) Removing the letter S and unscrambling irfs
3) Removing the letter R and unscrambling isfs
4) Removing the letter F and unscrambling isrs
5) Removing the letter S and unscrambling isrf

More anagrams containing the letters I S R F S
isrsf issfr fssir fssir