destroyed
Oh, dude, a word that starts with "d" and means not preserved is "decayed." It's like when your leftovers have been in the fridge for way too long and now they're all moldy and gross. So yeah, decayed is the word you're looking for.
A word that starts with "d" and means a loud noise is din.
How about the word: duster
Descendants.
no
dreadful
dough
Descendant
dirt
discover
discover
denizens or dwellers