Unscramble Isfet

What is the meaning of word isfet unscrambled?

What 5 letter words can be made from letters I S F E T:

1. feist - Definition of feist

Make more words by adding or removing letters

How many 4 letter words can you make from letters I S F E T?

1. efts - Definition of efts

2. fest - Definition of fest

3. fets - Definition of fets

4. fist - Definition of fist

5. fits - Definition of fits

6. seif - Definition of seif

7. SETI - Definition of SETI

8. sift - Definition of sift

9. site - Definition of site

10. ties - Definition of ties

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling sfet
2) Removing the letter S and unscrambling ifet
3) Removing the letter F and unscrambling iset
4) Removing the letter E and unscrambling isft
5) Removing the letter T and unscrambling isfe

More anagrams containing the letters I S F E T
isfte istef itefs eistf