Bachelor gets consumed and vanquished (6)
I believe the answer is:
beaten
'vanquished' is the definition.
('beat' can be a synonym of 'vanquish')
'bachelor gets consumed' is the wordplay.
'bachelor' becomes 'b' (abbreviation e.g. BA=Bachelor of Arts).
'gets' says to put letters next to each other.
'consumed' becomes 'eaten' (similar in meaning).
'b'+'eaten'='BEATEN'
'and' acts as a link.
(Other definitions for beaten that I've seen before include "(Of food) whipped" , "Describes a path much trodden" , "Defeated - thrashed" , "Worsted" , "Stuffed" .)