- Muckraker
- Mud headed
- Mud headedness
- Mud through
- Mud turtle
- Mud-fish
- Muddily
- Muddle through
- Muddle-headed
- Muesli
- Muff
- Muffle
- Mug up
- Muggiest
- Mugginess
- Muggle
- Mull cloth
- Muller
- Mullet
- Mullet fish
- Mullion
- Multi lateral
- Multi presence
- Multified
- Multiple intelligence
- Multiplex
- Multiplicable
- Multiplication table
- Multiplicator
- Multiplicity
- Multiplier
- Multitudinously
- Multum in parvpo
- Mumbled
- Mummify
- Mumming
- Munchkin
- Munificence
- Munificent person
- Muniment
- Muntion
- Muonium
- Muppet
- Mustard
- Murder
- Murk
- Murky
- Mixedly
- Mugful
- Mane
- Matins
- Moanful
- Monarchic
- Monophysitism
- Musicalness
- Malayali
- Malayalis
- Malayas
- Malcontent
- Male chauvinist
- Male cuckoo
- Male head of the house
- Male horse
- Male line
- Male tiger
- Male-spirited
- Malediction
- Maledictory
- Malefaction
- Malefic
- Malevolence
- Malfeasance
- Malformed
- Malfunction
- Malicious planet
- Maliciousness
- Malignancy
- Maligner
- Mallard
- Malnourished
- Malthusian
- Maltreat
- Malversation
- Mama
- Mamba
- Mamma
- Man
- Man of good standing
- Man of means
- Man of moods
- Man of sin
- Man-child
- Man-day
- Man-hater
- Man-sized
- Manage
- Manageabiliy
- Manageably
- Managerial
- Manatee