Unscramble Reffs

What is the meaning of word reffs unscrambled?

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

Make more words by adding or removing letters

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

1. effs - Definition of effs

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 effs
2) Removing the letter E and unscrambling rffs
3) Removing the letter F and unscrambling refs
4) Removing the letter F and unscrambling refs
5) Removing the letter S and unscrambling reff

More anagrams containing the letters R E F F S
refsf resff efsfr effsr