Some prefixes that go with the word "form" are mis-, trans-, de-, re-, and pre-. These prefixes can change the meaning of the word and create new words such as misform, transform, deform, reform, and preform.

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern --S-O-M. That is, seven letter words with 3rd letter S and 5th letter O and 7th letter M. In alphabetical order, they are:

ausform

bestorm

disform

misform

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 9 words with the pattern -I---RM. That is, seven letter words with 2nd letter I and 6th letter R and 7th letter M. In alphabetical order, they are:

bioherm

difform

disform

firearm

midterm

misform

misterm

pinworm

sidearm

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern MI---RM. That is, seven letter words with 1st letter M and 2nd letter I and 6th letter R and 7th letter M. In alphabetical order, they are:

midterm

misform

misterm

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern M---ORM. That is, seven letter words with 1st letter M and 5th letter O and 6th letter R and 7th letter M. In alphabetical order, they are:

misform