Unscramble Idfs

What is the meaning of word idfs unscrambled?

What 4 letter words can be made from letters I D F S:

1. difs - Definition of difs

2. fids - Definition of fids

Make more words by adding or removing letters

How many 3 letter words can you make from letters I D F S?

1. dif - Definition of dif

2. Dis - Definition of Dis

3. fid - Definition of fid

4. IDF - Definition of IDF

5. ids - Definition of ids

6. ifs - Definition of ifs

7. Sif - Definition of Sif

Which 3 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling dfs
2) Removing the letter D and unscrambling ifs
3) Removing the letter F and unscrambling ids
4) Removing the letter S and unscrambling idf

More anagrams containing the letters I D F S
idsf ifds sfid sifd