Unscramble Ifierstset

What is the meaning of word ifierstset unscrambled?

What 10 letter words can be made from letters I F I E R S T S E T:

1. testifiers - Definition of testifiers

Make more words by adding or removing letters

How many 9 letter words can you make from letters I F I E R S T S E T?

1. feistiest - Definition of feistiest

2. frisettes - Definition of frisettes

3. testifier - Definition of testifier

4. testifies - Definition of testifies

Which 9 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling fierstset
2) Removing the letter F and unscrambling iierstset
3) Removing the letter I and unscrambling iferstset
4) Removing the letter E and unscrambling ifirstset
5) Removing the letter R and unscrambling ifiestset
6) Removing the letter S and unscrambling ifiertset
7) Removing the letter T and unscrambling ifiersset
8) Removing the letter S and unscrambling ifierstet
9) Removing the letter E and unscrambling ifierstst
10) Removing the letter T and unscrambling ifierstse

More anagrams containing the letters I F I E R S T S E T
ifierstste ifiersttes siestefrti eitertsisf