Disdained starter of salami: like some beef? (7)
I believe the answer is:
scorned
'disdained' is the definition.
('scorn' can be a synonym of 'disdain')
'starter of salami like some beef?' is the wordplay.
'starter of' indicates taking the first letters.
'like some beef?' becomes 'corned' (I've seen this in another clue).
The initial letter of 'salami' is 's'.
's'+'corned'='SCORNED'
(Other definitions for scorned that I've seen before include "''Hell hath no fury like a woman .. . . . . .''" , "Derided" , "Treated with contempt" , "Dismissed" .)