Evidence of sorrow for the rip (4)
I believe the answer is:
tear
'rip' is the definition.
(I know that rip can be written as tear)
'evidence of sorrow for the' is the wordplay.
'evidence of sorrow' becomes 'ear' (I can't explain this - if you can you should give a lot more credence to this answer).
'for' is a charade indicator (letters next to each other) (I've seen this in other clues).
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'ear' after 't' is 'TEAR'.
Can you help me to learn more?
(Other definitions for tear that I've seen before include "Dash; drop" , "A drop of optical moisture" , "wrench" , "Rate (anag.)" , "A rip goes on a binge?" .)