Partakes of, when one is forced to (3)
I believe the answer is:
has
'partakes of' is the definition.
(I've seen this in another clue)
'when one is forced to' is the wordplay.
I cannot really understand how this works, but
'when' could be 'as' (eg 'when I walked' means 'as I walked') and 'as' is found in the answer.
A single letter 'h' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for has that I've seen before include "Contains" , "Cheats" , "Bears" , "Possesses or owns" , "Gives birth to" .)