Dodgy workman evasive about old bishop drinking whiskey (6)
I believe the answer is:
cowboy
'dodgy workman' is the definition.
'cowboy' can be an answer for 'workman' (cowboy is a kind of workman). I'm unsure of the 'dodgy' bit.
'evasive about old bishop drinking whiskey' is the wordplay.
'evasive' becomes 'coy' (coy can mean shy or evasive).
'about' indicates putting letters inside.
'old bishop' becomes 'ob' (this could be a standard abbreviation which I don't know about).
'drinking' is an insertion indicator (inserted letters are consumed or drunk).
'whiskey' becomes 'W' (alpha bravo charlie delta ...).
'ob' enclosing 'w' is 'owb'.
'coy' placed around 'owb' is 'COWBOY'.
Can you help me to learn more?
(Other definitions for cowboy that I've seen before include "Wrangler" , "Wild West rancher - unscrupulous workman" , "Incompetent (workman)" , "Amateurish" , "Wild West character" .)