Unscramble Nfsr

What is the meaning of word nfsr unscrambled?

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

Make more words by adding or removing letters

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

1. FRS - Definition of FRS

2. NSF - Definition of NSF

Which 3 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter N and unscrambling fsr
2) Removing the letter F and unscrambling nsr
3) Removing the letter S and unscrambling nfr
4) Removing the letter R and unscrambling nfs

More anagrams containing the letters N F S R
nrfs nrsf nsrf snfr