Mercenary (5)
'mercenary' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hireling that I've seen before include "Person working for money" , "One's got engaged" , "Minor employee" , "Menial worker" , "Mercenary worker" .)
'mercenary' is the definition.
(both can mean purely concerned with making money)
This is the entire clue.
(Other definitions for venal that I've seen before include "Easily corrupted" , "Susceptible to bribery" , "easily bribed" , "motivated by corruption" , "Influenced by bribery, corrupt" .)