Unscramble Imsrref

What is the meaning of word imsrref unscrambled?

What 7 letter words can be made from letters I M S R R E F:

1. firmers - Definition of firmers

Make more words by adding or removing letters

How many 6 letter words can you make from letters I M S R R E F?

1. fermis - Definition of fermis

2. firers - Definition of firers

3. firmer - Definition of firmer

4. friers - Definition of friers

5. rimers - Definition of rimers

Which 6 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling msrref
2) Removing the letter M and unscrambling isrref
3) Removing the letter S and unscrambling imrref
4) Removing the letter R and unscrambling imsref
5) Removing the letter R and unscrambling imsref
6) Removing the letter E and unscrambling imsrrf
7) Removing the letter F and unscrambling imsrre

More anagrams containing the letters I M S R R E F
imsrrfe irefmrs isrferm eifsrmr