Unscramble Setsrref

What is the meaning of word setsrref unscrambled?

What 8 letter words can be made from letters S E T S R R E F:

Make more words by adding or removing letters

How many 7 letter words can you make from letters S E T S R R E F?

1. ferrets - Definition of ferrets

2. festers - Definition of festers

3. resters - Definition of resters

Which 7 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter S and unscrambling etsrref
2) Removing the letter E and unscrambling stsrref
3) Removing the letter T and unscrambling sesrref
4) Removing the letter S and unscrambling setrref
5) Removing the letter R and unscrambling setsref
6) Removing the letter R and unscrambling setsref
7) Removing the letter E and unscrambling setsrrf
8) Removing the letter F and unscrambling setsrre

More anagrams containing the letters S E T S R R E F
setsrrfe sfeerrst fsrreets serfters