- Monoplane
- Monopoly
- Monosyllabic
- Monosyllable
- Monotheist
- Monotypic
- Monoxide
- Monsoon
- Monstrosity
- Monstrously
- Month of sundays
- Monthly salary
- Months
- Moose
- Monumentalize
- Moobs
- Moon
- Moon-ray
- Moonlit
- Moonlit dome
- Moonlit-night
- Moonrise
- Moons ray
- Moped
- Moral advice
- Moral psychology
- Morale
- Moralistic
- Moralization
- More information
- More kicks than half penny
- More or less
- More than a little
- Morning dress
- Mornings
- Moronic
- Moroseness
- Morph
- Morphemics
- Morphine
- Morphological
- Mortality
- Mortar
- Mortgager
- Mortgagor
- Mosaic gold
- Mosaic work
- Mosaic-proof
- Mosque
- Mote
- Mother fucker
- Mother love
- Mother ship
- Mother superior
- Motionless
- Motionlessly
- Motions
- Motivation
- Motive
- Motor car
- Motor skill
- Motorer
- Motorist
- Mottled
- Mould
- Mount
- Mount himalaya
- Mount meru
- Mountable
- Mountain pass
- Mountain slide
- Mountain system
- Mountebank
- Mourn
- Mouse potato
- Mouse-coloured
- Mouse-trap
- Mouser
- Moustache
- Mouth
- Mouth less
- Mouth organ
- Mouth ulcer
- Mouthed
- Mouthful
- Mouthful food
- Movable property
- Movableness
- Move
- Move along
- Move on
- Move over
- Move up
- Movember
- Movements of the bowels
- Moves
- Movingly
- Mower
- Mph
- Mr