- memorandum
- memoranda
- manner of speaking
- Muscivora_forficata
- Muscicapa striata
- Muscicapa grisola
- maguey
- murmuring
- murmuration
- mentor
- mumblety_peg
- mumble_the_peg
- motorized wheelchair
- minstrel
- madrigalist
- myrmecophile
- mutation
- mutant
- minor
- monkey
- mile_high city
- marked
- massaged
- monk
- motherfucker
- mother fucker
- muck
- motor vehicle
- Model T
- minivan
- motorcade
- motorcoach
- mock
- mould
- mold
- menu
- military quarters
- multiculturalism
- majority rule
- melvin calvin
- member bank
- member of merchantile community
- mythologist
- mnemonist
- mantic
- mar
- moolah
- motorboat
- medicine chest
- minister