Unscramble Siisms

What is the meaning of word siisms unscrambled?

What 6 letter words can be made from letters S I I S M S:

1. missis - Definition of missis

Make more words by adding or removing letters

How many 5 letter words can you make from letters S I I S M S?
Which 5 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter S and unscrambling iisms
2) Removing the letter I and unscrambling sisms
3) Removing the letter I and unscrambling sisms
4) Removing the letter S and unscrambling siims
5) Removing the letter M and unscrambling siiss
6) Removing the letter S and unscrambling siism

More anagrams containing the letters S I I S M S
siissm simiss ssismi sssmii