Lazy, shiftless (4)
I believe the answer is:
idle
I believe this clue is a double definition.
'lazy' is the first definition.
(similar in meaning)
'shiftless' is the second definition.
(similar in meaning)
(Other definitions for idle that I've seen before include "Not occupied" , "Monty Python's Eric, b. 1943" , "Unoccupied or not in use" , "Lazy, doing nothing" , "Not used to work" .)