- memento
- memo
- memo pad
- memoirs
- memorabilia
- memorable
- memorandum
- memorial
- memorize
- memory
- memory card
- men
- menace
- menacing
- menacingly
- menagerie
- mend
- mending
- menfolk
- menial
- meningitis
- menopause
- men's room
- menservants
- menstrual
- menstruate
- menstruation
- menswear
- mental
- mental age
- mental block
- mental hospital
- mental note
- mentality
- mentally
- mentally handicapped
- menthol
- mentholated
- mention
- mentor
- menu
- menu bar
- menu-driven
- meow
- MEP
- mercantile
- mercenary
- merchandise
- merchant
- merchant bank
- merchant navy
- merciful
- mercifully
- merciless
- mercilessly
- mercurial
- mercury
- Mercury
- mercy
- mercy killing
- mere
- merely
- merge
- merger
- meridian
- meringue
- merino
- merit
- meritocracy
- mermaid
- merrily
- merriment
- merry
- merry-go-round
- merrymaking
- mesh
- mesmerize
- mess
- message
- message board
- messenger
- Messiah
- Messrs
- messy
- met
- Met
- Met Office
- metabolism
- metal
- metallic
- metallurgy
- metalwork
- metalworker
- metamorphose
- metamorphosis
- metaphor
- metaphorical
- metaphysical
- metaphysics
- mete
- meteor
- meteoric
- meteorite
- meteorological
- meteorologist
- meteorology
- meter
- methadone
- methane
- method
- methodical
- methodically
- Methodist
- methodology
- meths
- methylated spirits
- meticulous
- meticulously
- metre
- metric
- metric system
- metric ton
- metrication
- metro
- metronome
- metropolis
- metropolitan
- mettle
- mew
- mews
- Mexican
- Mexico
- Mexico City
- mezzanine
- mg
- Mgr
- MHR
- MHz
- MI5
- MI6
- MIA
- miaow
- mice
- Mich.
- Michigan
- mickey
- micro
- micro-
- micro scooter
- microbe
- microbiologist
- microbiology
- microchip
- microcircuit
- microcomputer
- microcosm
- microfiche
- microfilm
- microlight
- micromesh
- micron
- microorganism
- microphone
- microprocessor
- microscope
- microscopic
- microsurgery
- microwave
- mid-
- midair
- midday
- middle
- middle age
- Middle Ages
- middle classes
- middle distance
- Middle East
- Middle Eastern
- middle management
- middle name
- middle school
- middle-aged
- middle-class
- middleman
- middle-of-the-road
- middleweight
- middling
- Middx
- midfield
- midge
- midget
- midi system
- Midlands
- midnight
- midriff
- midst
- midstream
- midsummer
- midway
- midweek