Examples of adverbs that start with M and end with LY are:
norm
Team
m=8 l=6 y=4 m X m = 8 X 8 = 64 =ly m X l = 8 X 6 = 48 = ym
malleable
Maize.
Farm If you mean... ends with an "m", not ends with "am".
Mushroom
A four letter word that starts with J and ends with M: jism.
gum
cram
Magic
macaroni
mob
A seven (7) letter word that starts with M and ends with O: memento
moonbeam
norm
mob