Servile, submissive (7)
I believe the answer is:
slavish
This clue is a double definition.
'servile' is the first definition.
(similar in meaning)
'submissive' is the second definition.
(I know that submissive can be written as slavish)
(Other definitions for slavish that I've seen before include "Submissive, servile" , "Abjectly subservient" , "fawning" , "that's hardly original" , "Cringing" .)