Here are some possible words:
machining
maddening
magicking
maligning
manacling
mandating
marauding
margining
marketing
marooning
marrowing
martyring
marveling
massaging
mastering
matrixing
mattering
measuring
medalling
mediating
mellowing
metalling
midwifing
midwiving
migrating
mildening
mildewing
mimicking
minifying
mirroring
misfiling
misfiring
misgiving
mislaying
mismating
misnaming
misruling
mistaking
mistiming
mistuning
mistyping
modelling
modifying
moldering
molesting
mongering
monkeying
montaging
morseling
mortaring
mortising
mothering
motioning
muggering
murdering
murmuring
mustering
mutinying
muttering
meeting
avowing
hearing
Nagging.
A seven letter word that starts with D and ends with T: decrypt
A seven (7) letter word that starts with M and ends with O: memento
Duchess is a seven letter word.
descentdecideddiamonddiscarddiscorddividedelevateerasuregaininggrowingglowinghellishlateralliterallogicalmodicumoreganoreentertangenttrident
cardiac
anxiety
andiron
malaria
stomata
Cabomba
Alveoli.
rotator