Hector, you can bribe for about fifty quid (5)
I believe the answer is:
bully
'hector' is the definition.
(synonyms)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for bully that I've seen before include "Well done" , "Intimidating person" , "Tinned beef" , "Very good" , "Intimidate" .)