Where the charge reposes if we are involved (4)
I believe the answer is:
onus
'where the charge reposes' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'we are involved' is the wordplay.
I cannot quite understand how this works, but
'we' could be 'us' and 'us' is present in the answer.
The remaining letters 'on' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'if' acts as a link.
Can you help me to learn more?
(Other definitions for onus that I've seen before include "Capulet opponent (R&J)" , "Obligation - charge" , "albatross?" , "Responsibilty" , "'Responsibility, task or burden (4)'" .)