Obedient, compliant (6)
I believe the answer is:
docile
I believe this is a double definition.
'obedient' is the first definition.
(similar in meaning)
'compliant' is the second definition.
(I've seen this before)
(Other definitions for docile that I've seen before include "Manageable" , "easy to manage" , "Willing to obey, compliant" , "asleep?" , "Gentle, tame" .)