Unscramble Errtfs

What is the meaning of word errtfs unscrambled?

What 6 letter words can be made from letters E R R T F S:

Make more words by adding or removing letters

How many 5 letter words can you make from letters E R R T F S?

1. frets - Definition of frets

Which 5 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter E and unscrambling rrtfs
2) Removing the letter R and unscrambling ertfs
3) Removing the letter R and unscrambling ertfs
4) Removing the letter T and unscrambling errfs
5) Removing the letter F and unscrambling errts
6) Removing the letter S and unscrambling errtf

More anagrams containing the letters E R R T F S
errtsf ersfrt sertfr rsfrte