Unscramble Irrset

What is the meaning of word irrset unscrambled?

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

1. triers - Definition of triers

Make more words by adding or removing letters

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

1. resit - Definition of resit

2. riser - Definition of riser

3. rites - Definition of rites

4. tiers - Definition of tiers

5. tires - Definition of tires

6. trier - Definition of trier

7. tries - Definition of tries

Which 5 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling rrset
2) Removing the letter R and unscrambling irset
3) Removing the letter R and unscrambling irset
4) Removing the letter S and unscrambling irret
5) Removing the letter E and unscrambling irrst
6) Removing the letter T and unscrambling irrse

More anagrams containing the letters I R R S E T
irrste irrtes sritre strrie