Scrapped opening of obituary that's nasty in newspaper (6)
I believe the answer is:
fought
'scrapped' is the definition.
(I've seen this in another clue)
'opening of obituary that's nasty in newspaper' is the wordplay.
'opening of' indicates taking the first letters.
'that's nasty' becomes 'ugh' (expression of disgust).
'in' means one lot of letters goes inside another.
'newspaper' becomes 'ft' (Financial Times newspaper).
The initial letter of 'obituary' is 'o'.
'o'+'ugh'='ough'
'ough' put inside 'ft' is 'FOUGHT'.
(Other definitions for fought that I've seen before include "Through the courts opposed" , "Scrapped" , "Quarrelled" , "Battled" , "Had a row" .)