Unscramble Itism

What is the meaning of word itism unscrambled?

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

1. mitis - Definition of mitis

Make more words by adding or removing letters

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

1. mist - Definition of mist

2. smit - Definition of smit

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling tism
2) Removing the letter T and unscrambling iism
3) Removing the letter I and unscrambling itsm
4) Removing the letter S and unscrambling itim
5) Removing the letter M and unscrambling itis

More anagrams containing the letters I T I S M
itmis itmsi sitim stimi