- Mulberry tree
- Mulch
- Mulct
- Mulethi
- Mulish
- Mullioned
- Multi programming
- Multi access system
- Multi focal
- Multi member
- Multi valence
- Multicuisine
- Multidisciplinary
- Multifarious
- Multiformity
- Multimillionaire
- Multiplicant
- Multiplicity of devices
- Multipurpose
- Multiracial
- Multisaking
- Mum
- Mumbo-jumbo
- Mummer
- Mummery
- Munch
- Municipal corporation
- Municipal council
- Municipality
- Munificent
- Muon
- Murder will out
- Murderess
- Murderous
- Murderously
- Murmuring
- 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
- Manful
- Mangle
- Manglish
- Mango grove
- Mango tree
- Manhandle
- Manhunt
- Manic
- Manifested
- Manikin
- Manipulate
- Manna
- Mannered
- Mannerism
- Manometer
- Manor
- Manorama
- Manthara
- Mantis