There are 142 words like that in the Scrabble dictionary. I trust 50 of the more common ones will suffice:
diadem
dialog
diaper
diatom
dibble
dicker
dickey
dictum
diddle
didn't
diesel
dieter
differ
digest
digger
dilate
dilute
dimity
dimmer
dimple
dimply
dimwit
dinghy
dingle
dingus
dinner
dioxin
dipole
dipper
direct
direly
dirndl
disarm
disbar
discus
dishes
dismal
dismay
disown
dispel
distal
distil
disuse
dither
divers
divert
divest
divide
divine
diving
A six letter word that starts with U is upward.
A science word that is six letters ans starts with the letter c is convex.
edicts
"Ragged" is a six-letter word that starts with an r and means tattered and shaggy.
doctor
jester
smelly
Alkali.
temple
morons.
Danger
edicts