Cursed painful wrapping of welt to start with (5)
I believe the answer is:
swore
'cursed painful wrapping' is the definition.
'swore' can be an answer for 'cursed' ('swear' can be a synonym of 'curse'). I am not certain of the 'painful wrapping' bit.
'welt to start with' is the wordplay.
I cannot really understand how this works, but
'with' could be 'w' (abbreviation) and 'w' is located in the answer.
'welt' could be 'sore' (I've seen this in another clue) and 'sore' is located in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for swore that I've seen before include "used bad language" , "Blasphemed" , "Took oath or cursed" , "Uttered profanities or avowed" .)