Charmers.
Dreamers.
alarmingargumentbasementcrammingDecemberencampedbloomingceremonycharmingcucumberdreamingdrumminggroomingmaximizeminimizemonumentmovementornamentrememberskimmingsteamingswimmingstrummedtrimming
marjoram
It could be mallard.
Matching
'massacre' maybe.
Mosquito.
Mammals is the word.
merge, manna
maintain
soulmate
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 8 words with the pattern M-MMI--. That is, seven letter words with 1st letter M and 3rd letter M and 4th letter M and 5th letter I. In alphabetical order, they are: mammies mimmick mommies mummias mummied mummies mummify mumming
mourners mistakes