Unscramble Irfs

What is the meaning of word irfs unscrambled?

What 4 letter words can be made from letters I R F S:

1. firs - Definition of firs

2. rifs - Definition of rifs

Make more words by adding or removing letters

How many 3 letter words can you make from letters I R F S?

1. fir - Definition of fir

2. Fri - Definition of Fri

3. FRS - Definition of FRS

4. ifs - Definition of ifs

5. IRS - Definition of IRS

6. rif - Definition of rif

7. RSI - Definition of RSI

8. Sif - Definition of Sif

9. sir - Definition of sir

10. sri - Definition of sri

Which 3 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling rfs
2) Removing the letter R and unscrambling ifs
3) Removing the letter F and unscrambling irs
4) Removing the letter S and unscrambling irf

More anagrams containing the letters I R F S
irsf isfr fsri risf