Some five letter words beginning with D:
The word is bawds. It means a madam.
Darshan and duramen are the seven letters word that start with D and end with N.
deserted?
Daffodill
demon
One word that fits your criteria is "distant." It starts with the letter 'd,' ends with 't,' and contains seven letters.
lsjfl
diligent
deform
drown - delay - decay -
daddy
Miand