Unscramble Irrfs

What is the meaning of word irrfs unscrambled?

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

Make more words by adding or removing letters

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

1. firs - Definition of firs

2. rifs - Definition of rifs

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling rrfs
2) Removing the letter R and unscrambling irfs
3) Removing the letter R and unscrambling irfs
4) Removing the letter F and unscrambling irrs
5) Removing the letter S and unscrambling irrf

More anagrams containing the letters I R R F S
irrsf irsfr sirrf rrsfi