Merriam-Webster's Collegiate Dictionary:
mandoline
mandolinist
mandragora
mandrake
mandrel
mandril
mandrill
mane
maned
maned wolf
manege
manes
manet
maneuver
maneuverability
maneuverable
maneuverer
manful
manfully
manfulness
mangabey
mangaia
mangalore
mangan-
manganate
manganese
manganese dioxide
manganesian
manganic
manganite
manganous
mangareva
mange
mangel
mangel-wurzel
manger
manginess
mangle
mangler
mango
mangonel
mangosteen
mangrove
mangy
manhandle
manhattan
manhattan beach
manhattan clam chowder
manhattanite
manhole
manhood
manhunt
mania
maniac
maniacal
maniacally
manic
manic depression
manic-depressive
manic-depressive illness
manically
manichaean
manichaeanism
manichaeism
manichean
manicheanism
manichee
manicheism
manicotti
manicure
manicurist
manifest
manifest destiny
manifestant
manifestation
manifester
manifestly
manifesto
manifold
manifoldly
manifoldness
manihiki
manihiki islands
manikin
manila
manila hemp
manila paper
manilla
manille
manioc
maniple
manipulability
manipulable
manipular
manipulatable
manipulate
manipulation
