Unscramble Proofstin

What is the meaning of word proofstin unscrambled?

What 9 letter words can be made from letters P R O O F S T I N:

Make more words by adding or removing letters

How many 8 letter words can you make from letters P R O O F S T I N?

1. frostnip - Definition of frostnip

2. Notropis - Definition of Notropis

3. portions - Definition of portions

4. positron - Definition of positron

5. sorption - Definition of sorption

Which 8 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter P and unscrambling roofstin
2) Removing the letter R and unscrambling poofstin
3) Removing the letter O and unscrambling profstin
4) Removing the letter O and unscrambling profstin
5) Removing the letter F and unscrambling proostin
6) Removing the letter S and unscrambling prooftin
7) Removing the letter T and unscrambling proofsin
8) Removing the letter I and unscrambling proofstn
9) Removing the letter N and unscrambling proofsti

More anagrams containing the letters P R O O F S T I N
proofstni prooftins tsoipofnr isoontrfp