- melody
- melt
- menstruate
- menstruation
- mensuration
- mensus
- mental reflection
- menthol
- mephistophelian
- mercurial
- mercury
- meringue
- mesmerize
- mess
- meteorologist
- method
- method demonstration
- meticulous
- mexican mint
- microbiology
- milk
- milk tooth
- milkman
- milksop
- millstone
- mime
- minced meat
- minefield
- mingle
- minion
- minor
- mint
- misconception
- miscreant
- misdate
- miser
- mixed blessing
- mixed blood
- mixing up
- moan
- moblog
- moisturizer
- molasses
- mole
- molten
- monarch
- monarchic
- monochord
- monocle
- monolithic
- monorhyme
- monotype
- monovalent
- moral turpitude
- moralize
- morbid protruberance of liver
- morbific
- more or less
- moulder
- mph
- much of muchness
- muck something up
- muddle
- muddle along, muddle through
- muss
- muster in force
- mutilate
- mutual
- muzzle
- mycology
- mystery
- macrocosm
- madness
- maid
- mediate
- merchandise
- messenger
- might
- mote
- mirth
- mistimed
- moderately
- momentary
- monk
- monkey
- muff
- mythical
- militarization
- mower
- medicated
- mass number
- malabar
- millennium
- meet one's demand
- mistime
- military honours
- make a concession
- muscular system
- myrrh
- memorial day