In working order (6)
'in working order' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for operating that I've seen before include "Active" , "Directing or controlling, machinery say" , "Cutting" , "(Of machine) running" , "Working" .)
'in working order' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for usable that I've seen before include "fit to wear" , "Serviceable" , "Fit for employment" , "Fit for service" , "Functional and available" .)