Successfully do a boring job (9)
I believe the answer is:
penetrate
'job' is the definition.
Although both the answer and definition are verbs in their base form, I don't understand how they can define each other.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for penetrate that I've seen before include "Run through" , "probe" , "Force way through, into" , "Pierce" , "Go through" .)