... unfortunately died after accepting sex part ... (6)
I believe the answer is:
divide
'sex part' is the definition.
'divide' can be an answer for 'part' (thesaurus). I am unsure of the 'sex' bit.
'unfortunately died after accepting' is the wordplay.
'unfortunately' is an anagram indicator.
'after' becomes 'vi' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'accepting' indicates putting letters inside.
'died' anagrammed gives 'dide'.
'dide' enclosing 'vi' is 'DIVIDE'.
Can you help me to learn more?
(Other definitions for divide that I've seen before include "Separate into portions" , "Split or separate into parts" , "Bisect" , "Part" , "Partition. separate" .)