Tim limb dim
It is much easier to answer a question about rhyming if you ask for words that rhyme with a word, not a letter.
m&m
M & M .
"Malevolent" rhymes with "magnificent" and starts with the letter "m."
Stuff
Eminem :D
Veranda
M is closest.
mute.
mute
Mckenny
George M. Cohan
Success, guess, excess, bless, mess, distress