King overwhelmed by wrongdoings, dies (5)
I believe the answer is:
sinks
'dies' is the definition.
The answer and definition can be both related to change as well as being verbs in their -s form.
Maybe you can see an association between them that I don't see?
'king overwhelmed by wrongdoings' is the wordplay.
'king' becomes 'K' (abbreviation for king in chess).
'overwhelmed by' means one lot of letters goes inside another (inserted letters get absorbed or overwhelmed).
'wrongdoings' becomes 'sins' (sin is a kind of wrongdoing).
'k' put inside 'sins' is 'SINKS'.
Can you help me to learn more?
(Other definitions for sinks that I've seen before include "Scuttles" , "Dips" , "Declines markedly" , "Goes down" , "Basins" .)