Unscramble Rrefs

What is the meaning of word rrefs unscrambled?

What 5 letter words can be made from letters R R E F S:

Make more words by adding or removing letters

How many 4 letter words can you make from letters R R E F S?

1. errs - Definition of errs

2. refs - Definition of refs

3. serf - Definition of serf

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter R and unscrambling refs
2) Removing the letter R and unscrambling refs
3) Removing the letter E and unscrambling rrfs
4) Removing the letter F and unscrambling rres
5) Removing the letter S and unscrambling rref

More anagrams containing the letters R R E F S
rresf rrfes refsr esfrr