Work-shy (4)
'work-shy' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for bone idle that I've seen before include "Very lazy, may be ossified?" , "Altogether lazy, in an ossified way" , "Very lazy, from the marrow out" , "Not lifting a finger" , "Very, lazy, almost ossified" .)
'work-shy' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for idle that I've seen before include "Monty Python team member" , "without purpose" , "Not busy" , "Futile" , "Not used to work" .)