- Mixed
- Mixed blessing
- Mixed breed
- Mixed caste
- Mixer
- Mixing up
- Mixture
- Moat
- Mob
- Mobile
- Mobilise
- Mobility
- Moccasin
- Mock
- Modeler
- Modelling
- Moderately
- Moderator
- Modern
- Modern history
- Modernise
- Moderniser
- Modernist
- Modernistic
- Modest
- Modification
- Modishly
- Modulation
- Modulus
- Modusvivendi
- Mogul
- Mohair
- Mohamedan
- Mohamedans
- Moistened
- Moisture
- Moke
- Molar
- Mollify
- Molotov cocktail
- Momentarily
- Momentary
- Momently
- Mommy
- Monad
- Monadic
- Monastically
- Mondayish
- Monde
- Money laundering
- Money makes the mare go
- Money purse
- Money talks
- Money-bag
- Moneyless
- Moneys worth
- Monger
- Mongolian
- Mongoose
- Mongraphist
- Monied
- Monies
- Monitory
- Monkey
- Monkey business
- Monkey-nut
- Monkeys
- Monocle
- Monoglot
- Monogram
- Monomaniacal
- Monopolistic
- Monopolize
- Monorhyme
- Monosepalous
- Monovalent
- Montane
- Monthly
- Moody
- Mooing of a cow
- Moolah
- Moon face
- Moon flower
- Moon set
- Moon-faced
- Moor land
- Moot
- Mop up
- Mope
- Moplah
- Moral duty
- Moral obligation
- Moreover
- Moral power
- Moral support
- Moral turpitude
- Moral victory
- Morality
- Moratorium
- Morbidity