Founder of a place of iniquity (4)
I believe the answer is:
sink
'founder' is the definition.
(I know that sink is a type of founder)
'a place of iniquity' is the wordplay.
I cannot quite understand how this works, but
'iniquity' could be 'sin' (I've seen this in another clue) and 'sin' is found within the answer.
A single letter 'k' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for sink that I've seen before include "Slump" , "something needed in kitchen" , "Washing-up place" , "place of iniquity?" , "Scene of iniquity or washing up" .)