The last letter of the word "m" is simply "m" itself, as it is a single-letter word. If you meant something else, please clarify!
mac
Freedom
aaaeggm
Martinez and Mendoza are Hispanic last names. They begin with the letter M.
sMasH
M
modern
jump (as in long jump)
There are no English 7-letter words that fit the pattern b?m???e.
Well, darling, the halfway mark of the alphabet is the letter "m," so the last letter before that would be "l." It's as simple as that, honey.
Mouse, mauve.
Maize