Decayed
Part of speech: verb
Definition: To deteriorate, to get worse, to lose strength or health, to decline in quality.
Part of speech: adjective
Definition: Describing something that has, or is in process, of decaying.
Rotten
Part of speech: adjective
Definition: Rancid, of perishable items that have been overridden with bacteria and other infectious agents.Cruel or mean.
Example sentence: I was a rotten kid. My excitement came from seeing what I could get away with.