Death of ethics over time (9)
I believe the answer is:
mortality
'time' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'death of ethics over' is the wordplay.
'death of' becomes 't' (I can't explain this - if you can you should give a lot more credence to this answer).
'ethics' becomes 'morality' (synonyms).
'over' indicates putting letters inside.
't' put within 'morality' is 'MORTALITY'.
Can you help me to learn more?
(Other definitions for mortality that I've seen before include "State of humanity" , "Death" .)