See boss sickened: died infatuated (8)
I believe the answer is:
obsessed
'infatuated' is the definition.
(thesaurus)
'see boss sickened died' is the wordplay.
I cannot quite understand how this works, but
'boss' could be 'ed' (short for editor - newspaper boss) and 'ed' is found within the answer.
'died' could be 'ob' and 'ob' is located in the answer.
The remaining letters 'sess' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for obsessed that I've seen before include "With compulsion" , "Excessively preoccupied" , "Showing compulsive interest" , "With mind continually occupied, abnormally focused" , "Hung up" .)