Maddening, malicious, materialistic, mean, meek, merciful, messy, meticulous, modest, moody and mopey are adjectives. They begin with the letter m.
Keen, Key, kiddy and kind are adjectives. Klutzy, kosher and kinetic are adjectives.
Moronic is an insult. It begins with the letter m.
magnums
an Olympic sport starting with m is marathon
A salad starting with the letter M could be a macaroni salad.
Moss Moon Moose Midge Mollusk
maltesers & m&ms
Mini
MakeMindMineMastMassMustMeatMeetMinkMireMadeMaidMazeMoreMood
Muscovite is a mineral. It begins with the letter m.
masala
mitten