Main, Mane, Made, Maid. Just off the top of my head.
more
A four letter word that starts with J and ends with M: jism.
MeatMateMakeMindMineMintMoodMeekMaleMailMassmast
mend
mademailmalemikemildmenumilk
Item.
mess
manx
A mild oath that starts with "e" is usually "egad." Perhaps the "m" is incorrect.
s for seek
Make is a word that means to create and starts with "m".
Moon
A seven (7) letter word that starts with M and ends with O: memento