mood
moon
main
made
mope meet meat moat
A synonym for fable (4 letters, beginning with M) is myth.
The silent letter in "mnemonic" is the "m" at the beginning of the word. In "pneumonia," the silent letter is the "p" at the beginning of the word.
A four letter word that starts with J and ends with M: jism.
mistime
Mogul.
MeatMateMakeMindMineMintMoodMeekMaleMailMassmast
MakeMindMineMastMassMustMeatMeetMinkMireMadeMaidMazeMoreMood
armybombcomecomacamedamedimedomefamefumegamehomelamelimelimbLimalimolamalimymamamemomimenamepumaRomesamesometimetame
moselle, margaux, moscato,
mademailmalemikemildmenumilk
Mash Monk