Unscramble Iperfs

What is the meaning of word iperfs unscrambled?

What 6 letter words can be made from letters I P E R F S:

Make more words by adding or removing letters

How many 5 letter words can you make from letters I P E R F S?

1. fires - Definition of fires

2. fries - Definition of fries

3. frise - Definition of frise

4. peris - Definition of peris

5. piers - Definition of piers

6. pries - Definition of pries

7. prise - Definition of prise

8. reifs - Definition of reifs

9. ripes - Definition of ripes

10. serif - Definition of serif

11. speir - Definition of speir

12. spier - Definition of spier

13. spire - Definition of spire

Which 5 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling perfs
2) Removing the letter P and unscrambling ierfs
3) Removing the letter E and unscrambling iprfs
4) Removing the letter R and unscrambling ipefs
5) Removing the letter F and unscrambling ipers
6) Removing the letter S and unscrambling iperf

More anagrams containing the letters I P E R F S
ipersf ipesfr reifps seripf