Unscramble Restftis

What is the meaning of word restftis unscrambled?

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

Make more words by adding or removing letters

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

1. fitters - Definition of fitters

2. resifts - Definition of resifts

3. sifters - Definition of sifters

4. sitters - Definition of sitters

5. strifes - Definition of strifes

6. titfers - Definition of titfers

Which 7 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter R and unscrambling estftis
2) Removing the letter E and unscrambling rstftis
3) Removing the letter S and unscrambling retftis
4) Removing the letter T and unscrambling resftis
5) Removing the letter F and unscrambling resttis
6) Removing the letter T and unscrambling restfis
7) Removing the letter I and unscrambling restfts
8) Removing the letter S and unscrambling restfti

More anagrams containing the letters R E S T F T I S
restftsi restifst irefstts sfttirse