Pendulum
mosaicist
carilium
madtv
marjoram
molasses
mininova
marjoram
'Moist'.
mourners mistakes
There is a minor planet called Mannheim, which starts with M, ends with M, and has eight letters.
momentum starts with the letter "M" and has 8 letters, while force starts with the letter "F" and has 5 letters.
Farm If you mean... ends with an "m", not ends with "am".