Unscramble Strffis

What is the meaning of word strffis unscrambled?

What 7 letter words can be made from letters S T R F F I S:

Make more words by adding or removing letters

How many 6 letter words can you make from letters S T R F F I S?

1. firsts - Definition of firsts

2. stiffs - Definition of stiffs

Which 6 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter S and unscrambling trffis
2) Removing the letter T and unscrambling srffis
3) Removing the letter R and unscrambling stffis
4) Removing the letter F and unscrambling strfis
5) Removing the letter F and unscrambling strfis
6) Removing the letter I and unscrambling strffs
7) Removing the letter S and unscrambling strffi

More anagrams containing the letters S T R F F I S
strffsi strfifs iftsfsr sfrsfti