Bob is brusque and revolting, I agree (7)
I believe the answer is:
curtsey
'bob' is the definition.
(I've seen this before)
'brusque and revolting i agree' is the wordplay.
'brusque' becomes 'curt' ('curt' can be a synonym of 'brusque').
'and' is a charade indicator (letters next to each other).
'revolting' shows that the letters should be reversed in order.
'i agree' becomes 'yes' (I've seen this before).
'yes' backwards is 'sey'.
'curt'+'sey'='CURTSEY'
'is' is the link.
(Other definitions for curtsey that I've seen before include "Girl's bob" , "old form of obeisance" , "Formal greeting, bob" , "Gesture of respect" , "Respectful greeting" .)