Unscramble Optrefs

What is the meaning of word optrefs unscrambled?

What 7 letter words can be made from letters O P T R E F S:

Make more words by adding or removing letters

How many 6 letter words can you make from letters O P T R E F S?

1. fetors - Definition of fetors

2. forest - Definition of forest

3. fortes - Definition of fortes

4. foster - Definition of foster

5. poster - Definition of poster

6. presto - Definition of presto

7. repots - Definition of repots

8. respot - Definition of respot

9. softer - Definition of softer

10. stoper - Definition of stoper

11. topers - Definition of topers

12. tropes - Definition of tropes

Which 6 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter O and unscrambling ptrefs
2) Removing the letter P and unscrambling otrefs
3) Removing the letter T and unscrambling oprefs
4) Removing the letter R and unscrambling optefs
5) Removing the letter E and unscrambling optrfs
6) Removing the letter F and unscrambling optres
7) Removing the letter S and unscrambling optref

More anagrams containing the letters O P T R E F S
optresf optrfes reotpfs pteorfs