Unscramble Subst

What is the meaning of word subst unscrambled?

What 5 letter words can be made from letters S U B S T:

1. busts - Definition of busts

2. stubs - Definition of stubs

Make more words by adding or removing letters

How many 4 letter words can you make from letters S U B S T?

1. buss - Definition of buss

2. bust - Definition of bust

3. buts - Definition of buts

4. stub - Definition of stub

5. subs - Definition of subs

6. tubs - Definition of tubs

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter S and unscrambling ubst
2) Removing the letter U and unscrambling sbst
3) Removing the letter B and unscrambling sust
4) Removing the letter S and unscrambling subt
5) Removing the letter T and unscrambling subs

More anagrams containing the letters S U B S T
subts susbt usstb utbss