Unscramble Itfset

What is the meaning of word itfset unscrambled?

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

Make more words by adding or removing letters

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

1. feist - Definition of feist

Which 5 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling tfset
2) Removing the letter T and unscrambling ifset
3) Removing the letter F and unscrambling itset
4) Removing the letter S and unscrambling itfet
5) Removing the letter E and unscrambling itfst
6) Removing the letter T and unscrambling itfse

More anagrams containing the letters I T F S E T
itfste itftes ftteis fsetti