- Merchant bank
- Merchants
- Merciful
- Mercurial
- Mercury is rising
- Mere
- Merengue
- Merger
- Meritorious
- Mermaid
- Merrymaking
- Mesentery
- Mesmerism
- Mesonic
- Mesquite
- Messed up
- Messenger of peace
- Messianic jew
- Messrs
- Metabasis
- Metabolism
- Metabolize
- Metal fatigue
- Metal leaf
- Metal zinc
- Metallic voice
- Metallize
- Metallography
- Metamorphosis
- Metaphor
- Metastasize
- Mete
- Meteorologist
- Meter
- Methamphetamine
- Methane
- Method of inhailing
- Meticulousness
- Metropolis
- Mew
- Mews
- Miaul
- Mickey
- Micr
- Microbiome
- Microcephal
- Microscopically
- Microvilli
- Mid section
- Mid-band
- Mid-ocean
- Mid-range
- Midas touch
- Middle world
- Middle-aged
- Midge
- Midland
- Midstream
- Midweek
- Midwifery
- Midyear
- Mightiness
- Mignonette
- Migraine
- Migrate
- Mike
- Milching cow
- Mild
- Mildew
- Mildness
- Murray
- Murrel
- Muscular system
- Muscularly
- Museum
- Mushroom
- Musical chairs
- Musically
- Musk extracted therefrom
- Musk melon
- Musky
- Muslim marriage
- Muslims
- Muslin
- Muslined
- Mustard oil
- Muster in force
- Musth
- Musty
- Mutability
- Mutable
- Mutering
- Mutilation of the limbs
- Mutinous
- Muttered
- Mutton-head
- Mutual hatred
- Mycelium
- Myopia
- Myriad-minded